# Best E-Signature APIs Software

  *By [Adam Crivello](https://research.g2.com/insights/author/adam-crivello)*

   eSignature APIs provide integrations for developers to connect their companies’ software with eSignature functionality. Vendors in this space provide APIs along with thorough documentation on how to access and use those APIs. By integrating with eSignature APIs, developers grant their organization the ability to gather signatures on documents shared electronically, eliminating the need for physical documents to record signatures.

eSignature APIs are directly related to [E-Signature software](https://www.g2.com/categories/e-signature). While E-Signature software provides an out-of-the-box solution, eSignature APIs give developers the tools to integrate eSignature functionality in a more customized way.

To qualify for inclusion in the eSignature APIs category, a product must:

- Host APIs allowing developers to integrate eSignature functionalities in their apps
- Provide documentation around API interactions and extensibility




  
## How Many E-Signature APIs Software Products Does G2 Track?
**Total Products under this Category:** 37

### Category Stats (May 2026)
- **Average Rating**: 4.55/5
- **New Reviews This Quarter**: 19
- **Buyer Segments**: Mid-Market 61% │ Small-Business 26% │ Enterprise 13%
- **Top Trending Product**: Contractbook (+0.029)
*Last updated: May 18, 2026*

  
## How Does G2 Rank E-Signature APIs Software Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 10,200+ Authentic Reviews
- 37+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

  
## Which E-Signature APIs Software Is Best for Your Use Case?

- **Leader:** [PandaDoc API](https://www.g2.com/products/pandadoc-api/reviews)
- **Highest Performer:** [GetAccept](https://www.g2.com/products/getaccept/reviews)
- **Easiest to Use:** [PandaDoc API](https://www.g2.com/products/pandadoc-api/reviews)
- **Top Trending:** [Yousign](https://www.g2.com/products/yousign/reviews)
- **Best Free Software:** [PandaDoc API](https://www.g2.com/products/pandadoc-api/reviews)

  
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---

  ## What Are the Top-Rated E-Signature APIs Software Products in 2026?
### 1. [PandaDoc API](https://www.g2.com/products/pandadoc-api/reviews)
  Create, manage, and eSign documents — directly on your platform. Easily integrate PandaDoc eSignature and document generation capabilities to optimize your workflow. For more information, including pricing and product features, visit us at www.pandadoc.com/api


  **Average Rating:** 4.6/5.0
  **Total Reviews:** 128
**How Do G2 Users Rate PandaDoc API?**

- **Ease of Use:** 9.2/10 (Category avg: 8.9/10)
- **Quality of Support:** 8.9/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.9/10 (Category avg: 8.8/10)

**Who Is the Company Behind PandaDoc API?**

- **Seller:** [PandaDoc](https://www.g2.com/sellers/pandadoc)
- **Company Website:** https://www.pandadoc.com
- **Year Founded:** 2011
- **HQ Location:** San Francisco, CA
- **Twitter:** @pandadoc (18,455 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/2211704/ (895 employees on LinkedIn®)

**Who Uses This Product?**
  - **Who Uses This:** Account Executive
  - **Top Industries:** Computer Software, Hospital & Health Care
  - **Company Size:** 47% Small-Business, 35% Mid-Market


#### What Are PandaDoc API's Pros and Cons?

**Pros:**

- Ease of Use (58 reviews)
- Organizational Integration (18 reviews)
- eSignature Functionality (15 reviews)
- Integrations (15 reviews)
- Simple (15 reviews)

**Cons:**

- Missing Features (11 reviews)
- Email Management (5 reviews)
- Lack of Automation (5 reviews)
- Template Issues (5 reviews)
- Complexity (4 reviews)

### 2. [Docusign](https://www.g2.com/products/docusign/reviews)
  Docusign helps organizations connect and automate how they prepare, sign, act on and manage agreements. As part of the Docusign's Intelligent Agreement Mangement (IAM), Docusign offers eSignature, the world's #1 way to sign electronically on practically any device, from almost anywhere, at any time. Today, over a million customers and more than a billion users in over 180 countries use the Docusign Intelligent Agreement Management (IAM) to accelerate the process of doing business and simplify people's lives. Docusign helps your business: \* Send, sign and track agreements quickly and easily \* Boost customer satisfaction by providing a superior signing experience \* Standardize the agreement process \* Save time by reducing manual work \* Increase accuracy of agreements \* Integrate with your existing business systems But don’t just take our word for it. Check out these customer stories now to see why Docusign is the leading eSignature provider: https://www.docusign.com/customer-stories Why companies everywhere choose Docusign: \* Trusted by over a million customers and more than a billion users \* 80% of agreements completed in 24 hours (44% in \< 15 minutes) \*Saves an average of $36 per document compared to traditional paper processes \* 24/7 customer support \* 350+ integrations and APIs \*Docusign eSignature has the most 5-star reviews of any electronic signature product on Apple App Store, Google Play Store and Salesforce AppExchange \* Docusign eSignatures are secure, lawful and court-admissible


  **Average Rating:** 4.5/5.0
  **Total Reviews:** 2,505
**How Do G2 Users Rate Docusign?**

- **Ease of Use:** 9.0/10 (Category avg: 8.9/10)
- **Quality of Support:** 8.3/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 8.3/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.5/10 (Category avg: 8.8/10)

**Who Is the Company Behind Docusign?**

- **Seller:** [Docusign](https://www.g2.com/sellers/docusign)
- **Company Website:** https://www.docusign.com
- **Year Founded:** 2003
- **HQ Location:** San Francisco, CA
- **Twitter:** @Docusign (144,160 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/19022/ (8,411 employees on LinkedIn®)

**Who Uses This Product?**
  - **Who Uses This:** Account Executive, Realtor
  - **Top Industries:** Computer Software, Real Estate
  - **Company Size:** 40% Small-Business, 39% Mid-Market


#### What Are Docusign's Pros and Cons?

**Pros:**

- Ease of Use (75 reviews)
- Electronic Signing (53 reviews)
- Signatures (36 reviews)
- Easy Signing (33 reviews)
- Time Saving (25 reviews)

**Cons:**

- Expensive (27 reviews)
- Pricing Issues (17 reviews)
- Poor Customer Support (14 reviews)
- Limited Customization (12 reviews)
- Missing Features (10 reviews)

### 3. [Foxit eSign](https://www.g2.com/products/foxit-esign/reviews)
  Over 650 million users use Foxit, and it has sold to over 425,000 customers, ranging from SMBs to global enterprises, located in more than 200 countries worldwide. Foxit eSign allows you to grow your business based on your needs, not everyone else’s. Break away from cookie-cutter eSignature solutions that put you in a plan with features you don’t need. Foxit empowers organizations of all sizes and individuals to get documents signed and move on with their day. Our flexible solution comes in two plans. Simple eSigning and payment collection tools are yours with the Foxit eSign Essentials plan. Or empower teams with template sharing, custom branding, and user management tools with Foxit eSign for Business. Need more compliance, access to integrations, or advanced workflow management? You can get all that and more by adding whichever modules you need to your Foxit eSign Business plan anytime. Work is hard enough. Let’s keep eSigning simple. Just a few of the helpful features available with Foxit eSign software include: • Reusable templates to save time • Bulk signing and sending • Audit trails and Certificates of Completion • Attach photos, driver's license, etc. directly to documents • In-person signing • Generate in-email document links for easy access and signing • Online form/embedding code available to integrate eSignatures directly into websites • Use eSign Genie REST APIs to integrate with your website or application • Easily integrate with Google Drive, Dropbox, and more • Excel reporting • Email bounce notifications • Signing in 11 different languages


  **Average Rating:** 4.6/5.0
  **Total Reviews:** 1,432
**How Do G2 Users Rate Foxit eSign?**

- **Ease of Use:** 9.1/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.0/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.3/10 (Category avg: 8.9/10)
- **Ease of Setup:** 9.2/10 (Category avg: 8.8/10)

**Who Is the Company Behind Foxit eSign?**

- **Seller:** [Foxit](https://www.g2.com/sellers/foxit)
- **Company Website:** https://www.foxit.com/
- **Year Founded:** 2001
- **HQ Location:** Fremont, CA
- **Twitter:** @foxitsoftware (6,234 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/foxit-corporation/ (559 employees on LinkedIn®)

**Who Uses This Product?**
  - **Who Uses This:** Owner, CEO
  - **Top Industries:** Higher Education, Information Technology and Services
  - **Company Size:** 68% Small-Business, 22% Mid-Market


#### What Are Foxit eSign's Pros and Cons?

**Pros:**

- Ease of Use (92 reviews)
- eSignature Functionality (44 reviews)
- Signatures (42 reviews)
- Easy Signing (34 reviews)
- Easy Setup (30 reviews)

**Cons:**

- Limited Customization (15 reviews)
- Limited Features (15 reviews)
- Signature Issues (15 reviews)
- Poor Customer Support (13 reviews)
- E-Signature Issues (12 reviews)

### 4. [Adobe Acrobat Sign API](https://www.g2.com/products/adobe-acrobat-sign-api/reviews)
  Acrobat Sign’s APIs allow you to create apps and embed the Acrobat Sign UI and functionality into your applications. Those apps can receive status updates in real-time as well as retrieve and store copies of the signed agreements


  **Average Rating:** 4.5/5.0
  **Total Reviews:** 12
**How Do G2 Users Rate Adobe Acrobat Sign API?**

- **Ease of Use:** 8.3/10 (Category avg: 8.9/10)
- **Quality of Support:** 8.5/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 8.9/10)
- **Ease of Setup:** 9.1/10 (Category avg: 8.8/10)

**Who Is the Company Behind Adobe Acrobat Sign API?**

- **Seller:** [Adobe](https://www.g2.com/sellers/adobe)
- **Year Founded:** 1982
- **HQ Location:** San Jose, CA
- **Twitter:** @Adobe (959,034 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/1480/ (41,539 employees on LinkedIn®)
- **Ownership:** NASDAQ:ADBE

**Who Uses This Product?**
  - **Company Size:** 58% Small-Business, 25% Enterprise


### 5. [DropBox Sign API](https://www.g2.com/products/dropbox-sign-api/reviews)
  Dropbox Sign API empowers your business to seamlessly integrate e-sign natively, enabling unified and legally-binding signatures workflows that are personalized for your brand. Our developer-friendly API means implementation is effortless, allowing your business to launch your integration the same day. Visit the Dropbox Sign API documentation today, and get started in minutes. Features - Fast, reliable implementation - Integrate eSignatures in your app in just a few hours with an award-winning developer experience. - Configurability comes standard - Create a custom, branded experience, and configure emails to promote your company brand. - Collect eSignatures securely - Secure your documents with data encryption, audit trails, tamper-proofing and compliant with with ISO 27001, SOC 2 Type II, HIPAA, eIDAS, and GDPR.


  **Average Rating:** 4.2/5.0
  **Total Reviews:** 47
**How Do G2 Users Rate DropBox Sign API?**

- **Ease of Use:** 8.5/10 (Category avg: 8.9/10)
- **Quality of Support:** 8.2/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 8.2/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.3/10 (Category avg: 8.8/10)

**Who Is the Company Behind DropBox Sign API?**

- **Seller:** [Dropbox](https://www.g2.com/sellers/dropbox)
- **Year Founded:** 2007
- **HQ Location:** San Francisco, California
- **Twitter:** @Dropbox (3,287,385 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/167251/ (4,030 employees on LinkedIn®)
- **Ownership:** NASDAQ: DBX

**Who Uses This Product?**
  - **Top Industries:** Information Technology and Services, Computer Software
  - **Company Size:** 47% Mid-Market, 40% Small-Business


#### What Are DropBox Sign API's Pros and Cons?

**Pros:**

- Ease of Use (4 reviews)
- Templates (3 reviews)
- Customer Support (2 reviews)
- Digital Signatures (2 reviews)
- Helpful (2 reviews)

**Cons:**

- E-Signature Issues (3 reviews)
- Editing Difficulty (2 reviews)
- Complexity (1 reviews)
- Document Deletion (1 reviews)
- Formatting Issues (1 reviews)

### 6. [Xodo Sign](https://www.g2.com/products/xodo-sign/reviews)
  Xodo Sign, formerly known as eversign, is a secure and affordable electronic signature solution built to support both small businesses and enterprise users in managing contracts, agreements, and approvals online. Powered by Apryse technology, it offers powerful features such as legally binding and compliant e-signatures, advanced PDF editing, real-time audit trails, team collaboration tools, reusable templates, and smooth integration with popular business apps. Try Xodo Sign today to close deals faster, cut operational costs, and streamline document editing and e-signing, all within one secure platform. For teams and developers, Xodo Sign also provides a flexible eSignature API to embed digital signing directly into existing systems and workflows.


  **Average Rating:** 4.8/5.0
  **Total Reviews:** 2,740
**How Do G2 Users Rate Xodo Sign?**

- **Ease of Use:** 9.4/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.3/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.6/10 (Category avg: 8.9/10)
- **Ease of Setup:** 9.4/10 (Category avg: 8.8/10)

**Who Is the Company Behind Xodo Sign?**

- **Seller:** [Apryse](https://www.g2.com/sellers/apryse)
- **Company Website:** https://apryse.com
- **Year Founded:** 1998
- **HQ Location:** Denver, CO
- **Twitter:** @aprysesolutions (382 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/aprysesolutions/ (525 employees on LinkedIn®)

**Who Uses This Product?**
  - **Who Uses This:** Owner, CEO
  - **Top Industries:** Marketing and Advertising, Real Estate
  - **Company Size:** 90% Small-Business, 6% Mid-Market


#### What Are Xodo Sign's Pros and Cons?

**Pros:**

- Ease of Use (59 reviews)
- Time Saving (38 reviews)
- User-Friendly Interface (31 reviews)
- Simple (23 reviews)
- Signatures (22 reviews)

**Cons:**

- Signature Issues (7 reviews)
- Limited Customization (6 reviews)
- Expensive (5 reviews)
- Confusing (4 reviews)
- Limited Features (4 reviews)

### 7. [GetAccept](https://www.g2.com/products/getaccept/reviews)
  GetAccept is a Digital Sales Room platform trusted by more than 5000 revenue teams to help reps spend more time selling and less time on admin. We bring static sales content and scattered communication into one shared space where every stakeholder can access the latest content, timelines, and context throughout the whole sales cycle. And with purpose-built AI that truly understands the context of your deals, creating and updating personalized content takes minutes. Native integrations with popular CRMs let reps work with their existing tools, while making sure activity is automatically synced and updated everywhere it matters. In short – we help sales teams work smart, close faster, and win more.


  **Average Rating:** 4.6/5.0
  **Total Reviews:** 1,224
**How Do G2 Users Rate GetAccept?**

- **Ease of Use:** 8.9/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.2/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.3/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.7/10 (Category avg: 8.8/10)

**Who Is the Company Behind GetAccept?**

- **Seller:** [GetAccept Inc.](https://www.g2.com/sellers/getaccept-inc)
- **Company Website:** https://www.getaccept.com
- **Year Founded:** 2015
- **HQ Location:** Palo Alto, CA
- **Twitter:** @getaccept (1,434 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/10154116/ (156 employees on LinkedIn®)

**Who Uses This Product?**
  - **Who Uses This:** Sales Manager, Account Manager
  - **Top Industries:** Computer Software, Information Technology and Services
  - **Company Size:** 51% Small-Business, 42% Mid-Market


#### What Are GetAccept's Pros and Cons?

**Pros:**

- Ease of Use (92 reviews)
- Customer Support (48 reviews)
- Helpful (42 reviews)
- Intuitive (40 reviews)
- Time-saving (38 reviews)

**Cons:**

- Missing Features (16 reviews)
- Limited Customization (11 reviews)
- Limited Features (11 reviews)
- Difficult Editing (10 reviews)
- Poor Integration (9 reviews)

### 8. [OneSpan Sign](https://www.g2.com/products/onespan-sign/reviews)
  OneSpan Sign is a modern, secure, and enterprise-grade eSignature solution designed to help organizations streamline document signing workflows and enhance customer experiences. This innovative platform addresses the growing need for efficient and reliable electronic signature processes, particularly in industries where compliance and security are paramount. By leveraging advanced technology, OneSpan Sign empowers businesses to manage their document signing needs effectively while reducing turnaround times and improving overall operational efficiency. Targeted primarily at enterprises and organizations that require robust eSignature capabilities, OneSpan Sign caters to a wide range of industries, including finance, insurance, government, public sector, healthcare, technology, and business services. These sectors often face stringent regulatory requirements and high stakes when it comes to document security and integrity. OneSpan Sign provides a comprehensive solution that not only meets these demands but also offers a user-friendly interface that simplifies the signing process for both senders and signers. This ease of use is crucial in fostering positive customer interactions and ensuring that agreements are completed swiftly. One of the key features of OneSpan Sign is its high level of customization, which allows organizations to fully tailor the signing experience to align with their brand identity. This includes the ability to incorporate logos, colors, and personalized messaging, ensuring that the eSignature process feels cohesive and familiar to users. Unlike other eSignature solutions that prioritize their own branding, OneSpan Sign’s white-labeling capabilities keep your brand front and center, leading to higher adoption and a seamless user experience. Security is a cornerstone of OneSpan Sign, which offers advanced identity proofing, authentication methods, and encryption protocols to protect sensitive information. This focus on security not only helps organizations safeguard their data but also builds trust with customers who are increasingly concerned about privacy and fraud. Furthermore, OneSpan Sign is recognized for its exceptional customer support, ranked #1 in customer satisfaction according to G2 Quality of Support. This commitment to responsive and expert assistance ensures seamless implementation and ongoing success for users. Another significant advantage of OneSpan Sign is its cost-effectiveness compared to traditional eSignature solutions. Many organizations struggle with the high costs associated with scaling eSignature capabilities, but OneSpan Sign offers one of the most flexible and competitive pricing models on the market. This makes it an attractive option for businesses looking to enhance their document signing processes without incurring prohibitive expenses, ultimately leading to improved operational efficiency and customer satisfaction.


  **Average Rating:** 4.7/5.0
  **Total Reviews:** 729
**How Do G2 Users Rate OneSpan Sign?**

- **Ease of Use:** 9.3/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.3/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.4/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.8/10 (Category avg: 8.8/10)

**Who Is the Company Behind OneSpan Sign?**

- **Seller:** [OneSpan](https://www.g2.com/sellers/onespan)
- **Company Website:** https://www.onespan.com/
- **Year Founded:** 1991
- **HQ Location:** Boston, MA
- **Twitter:** @OneSpan (3,369 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/onespan/ (609 employees on LinkedIn®)

**Who Uses This Product?**
  - **Who Uses This:** President, CEO
  - **Top Industries:** Information Technology and Services, Financial Services
  - **Company Size:** 34% Small-Business, 26% Mid-Market


#### What Are OneSpan Sign's Pros and Cons?

**Pros:**

- Ease of Use (6 reviews)
- Intuitive (4 reviews)
- Electronic Signing (3 reviews)
- Organizational Integration (3 reviews)
- Reliability (3 reviews)

**Cons:**

- Confusing (2 reviews)
- Interface Usability (2 reviews)
- Limited Customization (2 reviews)
- Missing Features (2 reviews)
- Not User-Friendly (2 reviews)

### 9. [Zoho Sign API](https://www.g2.com/products/zoho-sign-api/reviews)
  Digital signature API plans and pricing. Simple, transparent, and pay as you use.


  **Average Rating:** 4.5/5.0
  **Total Reviews:** 23
**How Do G2 Users Rate Zoho Sign API?**

- **Ease of Use:** 9.3/10 (Category avg: 8.9/10)
- **Quality of Support:** 8.7/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.6/10 (Category avg: 8.9/10)
- **Ease of Setup:** 9.3/10 (Category avg: 8.8/10)

**Who Is the Company Behind Zoho Sign API?**

- **Seller:** [Zoho](https://www.g2.com/sellers/zoho-b00ca9d5-bca8-41b5-a8ad-275480841704)
- **Year Founded:** 1996
- **HQ Location:** Austin, TX
- **Twitter:** @Zoho (137,492 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/38373/ (30,531 employees on LinkedIn®)
- **Phone:** +1 (888) 900-9646 

**Who Uses This Product?**
  - **Top Industries:** Computer Software, Information Technology and Services
  - **Company Size:** 39% Small-Business, 39% Mid-Market


### 10. [SignNow API](https://www.g2.com/products/signnow-api/reviews)
  The airSlate SignNow API is a robust electronic signature solution designed to seamlessly integrate eSignature capabilities into websites, applications, and platforms. This API enables businesses to create, send, and manage documents requiring signatures directly within their existing systems, enhancing workflow efficiency and user experience. Key Features and Functionality: - Embedded Signing: Facilitates in-app signing experiences, allowing users to sign documents without leaving the application. - Embedded Editor: Provides tools for users to add custom fields and prepare documents for signature within the app. - Embedded Sending: Enables users to send signature requests directly from the application, with options to add fields before dispatching. - Multiple Brands: Offers customization of the signing experience, including invite emails, welcome pop-ups, and embedded signing sessions, to align with multiple brand identities. - Webhooks: Delivers real-time event notifications for document statuses, supporting up to 75 unique document and user events. - Security and Compliance: Adheres to stringent legal and security standards, including eIDAS, ESIGN, QES, HIPAA, FDA Part 11, SOC 2, and AES encryption, ensuring the protection of sensitive information. Primary Value and User Solutions: The airSlate SignNow API addresses the need for efficient, secure, and legally compliant electronic signature processes within business applications. By integrating this API, organizations can streamline document workflows, reduce turnaround times, and enhance the overall user experience. The API's ease of integration, comprehensive documentation, and support for multiple programming languages make it accessible for developers, while its scalability and competitive pricing cater to businesses of various sizes. Ultimately, the airSlate SignNow API empowers businesses to digitize and automate their document signing processes, leading to increased productivity and operational efficiency.


  **Average Rating:** 4.4/5.0
  **Total Reviews:** 13
**How Do G2 Users Rate SignNow API?**

- **Ease of Use:** 8.1/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.2/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.9/10 (Category avg: 8.8/10)

**Who Is the Company Behind SignNow API?**

- **Seller:** [airSlate](https://www.g2.com/sellers/airslate)
- **Year Founded:** 2006
- **HQ Location:** Brookline, Massachusetts
- **Twitter:** @airSlate (1,237 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/airslate/ (816 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 62% Small-Business, 23% Mid-Market


#### What Are SignNow API's Pros and Cons?

**Pros:**

- Organizational Integration (1 reviews)
- Setup Ease (1 reviews)

**Cons:**

- E-Signature Issues (1 reviews)
- Poor Interface Design (1 reviews)

### 11. [Yousign API](https://www.g2.com/products/yousign-api/reviews)
  Yousign API is a comprehensive solution designed to seamlessly integrate electronic signature capabilities into your business applications, enhancing document workflows and ensuring compliance with European regulations. It offers a secure and efficient method for automating contract processes, enabling businesses to manage document approvals and agreements directly within their existing systems. Key Features and Functionality: - Electronic Signature Integration: Embed legally binding eSignatures into your applications, compliant with GDPR and eIDAS standards, to facilitate secure document signing. - Electronic Seals: Automatically apply electronic seals to documents, ensuring their authenticity and integrity. - Identity and Document Verification: Simplify customer onboarding and reduce fraud risk with integrated identity and document verification solutions. - Developer-Friendly API: Benefit from a RESTful API with clear documentation, code examples, and a free 40-day sandbox environment for testing and integration. - Customization and Automation: Customize the signing experience with your brand elements and automate workflows using features like webhooks, smart anchors, and custom notifications. Primary Value and Solutions Provided: Yousign API addresses the need for efficient, secure, and compliant digital transaction management. By integrating Yousign's electronic signature capabilities, businesses can: - Accelerate Contract Processes: Reduce the time required to prepare, send, and sign documents, leading to faster deal closures. - Enhance User Experience: Offer a seamless and intuitive signing process within your own applications, improving customer satisfaction. - Ensure Legal Compliance: Meet European regulatory requirements with eIDAS-compliant signatures and verifications, providing peace of mind for both businesses and clients. - Streamline Operations: Automate document workflows and integrate with existing tools (CRM, ERP, etc.), reducing manual tasks and operational costs. By leveraging Yousign API, organizations can transform their document management processes, ensuring security, compliance, and efficiency in their digital transactions.


  **Average Rating:** 4.1/5.0
  **Total Reviews:** 19
**How Do G2 Users Rate Yousign API?**

- **Ease of Use:** 8.2/10 (Category avg: 8.9/10)
- **Quality of Support:** 8.6/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.8/10 (Category avg: 8.8/10)

**Who Is the Company Behind Yousign API?**

- **Seller:** [Yousign](https://www.g2.com/sellers/yousign)
- **Year Founded:** 2013
- **HQ Location:** Caen, Normandie
- **Twitter:** @YousignEU (3,291 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/2900651/ (250 employees on LinkedIn®)

**Who Uses This Product?**
  - **Top Industries:** Information Technology and Services
  - **Company Size:** 55% Small-Business, 35% Mid-Market


#### What Are Yousign API's Pros and Cons?

**Pros:**

- User Experience (4 reviews)
- Ease of Use (3 reviews)
- Contract Management (2 reviews)
- Easy Signing (2 reviews)
- eSignature Functionality (2 reviews)

**Cons:**

- Not User-Friendly (2 reviews)
- Pricing Issues (2 reviews)
- Slow Performance (2 reviews)
- Editing Difficulty (1 reviews)
- Expensive Subscriptions (1 reviews)

### 12. [Anvil](https://www.g2.com/products/anvil-foundry-anvil/reviews)
  Anvil helps turn clunky paperwork processes into embeddable document workflows with document APIs for product teams. We work closely with HRtech, Insurtech, FinTech, Healthcare, Real Estate, and startup companies where paperwork, user experience, and data accessibility are considered "high-priority".


  **Average Rating:** 4.7/5.0
  **Total Reviews:** 29
**How Do G2 Users Rate Anvil?**

- **Ease of Use:** 9.0/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.4/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 8.8/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.9/10 (Category avg: 8.8/10)

**Who Is the Company Behind Anvil?**

- **Seller:** [Anvil Foundry](https://www.g2.com/sellers/anvil-foundry)
- **Year Founded:** 2018
- **HQ Location:** San Francisco, California
- **LinkedIn® Page:** https://www.linkedin.com/company/anvil-foundry/ (29 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 60% Small-Business, 30% Mid-Market


#### What Are Anvil's Pros and Cons?

**Pros:**

- Ease of Use (11 reviews)
- Customer Support (7 reviews)
- Efficiency (6 reviews)
- Software Integration (6 reviews)
- Digital Signature (5 reviews)

**Cons:**

- Confusing (3 reviews)
- Complexity (2 reviews)
- Implementation Difficulties (2 reviews)
- Missing Features (2 reviews)
- Poor Documentation (2 reviews)

### 13. [Legalesign API](https://www.g2.com/products/legalesign-api/reviews)
  Legalesign API is UK-based eSignature software to send, sign and manage contracts online. Flexible architecture allows total control of PDFs, sent documents, workflows, groups and users. Built for scalability, our digital signature API is structured around groups/teams, simple to implement but with the flexibility to describe many organisational systems. Companies use Legalesign to gain significant productivity and financial benefits, increase their customers' satisfaction by removing the need for a printer and enabling them to sign from anywhere and, last but not least, relieve the burden of tiresome paperwork upon long suffering staff everywhere. Try Legalesign's RESTful API for 14-days with our free trial: https://access.legalesign.com/?q=signUp


  **Average Rating:** 4.8/5.0
  **Total Reviews:** 15
**How Do G2 Users Rate Legalesign API?**

- **Ease of Use:** 9.2/10 (Category avg: 8.9/10)
- **Quality of Support:** 10.0/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.7/10 (Category avg: 8.9/10)
- **Ease of Setup:** 9.4/10 (Category avg: 8.8/10)

**Who Is the Company Behind Legalesign API?**

- **Seller:** [Legalesign](https://www.g2.com/sellers/legalesign)
- **Year Founded:** 2012
- **HQ Location:** Cambridge, England
- **Twitter:** @Legalesign (512 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/2880918/ (13 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 93% Small-Business, 7% Mid-Market


### 14. [Yousign](https://www.g2.com/products/yousign/reviews)
  Yousign is the easy-to-use, legally binding eSignature, and contract automation solution that is helping more than 13 000 SMBs power their agreements. Our platform streamlines your approval workflows, secures your agreements, and enables you to offer a top-notch experience to your customers, partners, and teams. We deliver a seamless and personalized signing experience with compliance at its core. As a trusted third party, certification authority, and eIDAS-certified solution, we always ensure the legal validity of your signatures. Yousign enables your business to: Be productive - Approve, send, and sign all documents in just a few clicks from anywhere - Automate tracking and speed up signatures - Easily integrate with your existing solutions Be secure - Strengthen data security and traceability - Provide centralized legally binding signatures Be collaborative - Ensure immediate adoption and better collaboration - Streamline and standardize processes Be unique - Offer a high-quality signing experience to both users and end-users - Enhance the brand image and ensure consistency


  **Average Rating:** 4.3/5.0
  **Total Reviews:** 91
**How Do G2 Users Rate Yousign?**

- **Ease of Use:** 9.1/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.0/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.3/10 (Category avg: 8.9/10)
- **Ease of Setup:** 9.2/10 (Category avg: 8.8/10)

**Who Is the Company Behind Yousign?**

- **Seller:** [Yousign](https://www.g2.com/sellers/yousign)
- **Year Founded:** 2013
- **HQ Location:** Caen, Normandie
- **Twitter:** @YousignEU (3,291 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/2900651/ (250 employees on LinkedIn®)

**Who Uses This Product?**
  - **Who Uses This:** CEO
  - **Top Industries:** Real Estate, Financial Services
  - **Company Size:** 78% Small-Business, 19% Mid-Market


#### What Are Yousign's Pros and Cons?


**Cons:**

- Poor Customer Support (2 reviews)
- Unexpected Fees (2 reviews)
- Expensive (1 reviews)
- Expensive Subscriptions (1 reviews)
- Payment Issues (1 reviews)

### 15. [Formstack Sign](https://www.g2.com/products/formstack-sign/reviews)
  Fast and secure digital signatures anywhere. Formstack Sign is a cloud-based electronic signature solution that helps small to large businesses collect e-signatures for document authorization, ensure privacy, and access the system across multiple devices. Offering a host of features, such as customizable templates, a drag-and-drop interface, electronic file conversion, signer redirection/referral, reusable forms, and more, the platform syncs with Google and Outlook to help users import contact information. Additionally, it allows users to personalize documents with custom fonts, branding, and colors. Formstack Sign enables users to create password-protected documents that can be signed via SMS/text messages. To ensure legal compliance, the solution includes an audit trail for all documentation. The product is available on a per-user per-month subscription, and support is extended via email and online helpdesk. Formstack Sign is an ideal digital signature solution for any industry, including: - Healthcare - Higher Education - Insurance - Financial Services - Government - Energy and Utilities Formstack Sign saves teams an average of 13 hours per week, giving them more time to focus on impactful work.


  **Average Rating:** 4.8/5.0
  **Total Reviews:** 404
**How Do G2 Users Rate Formstack Sign?**

- **Ease of Use:** 9.6/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.3/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.5/10 (Category avg: 8.9/10)
- **Ease of Setup:** 9.4/10 (Category avg: 8.8/10)

**Who Is the Company Behind Formstack Sign?**

- **Seller:** [Formstack, LLC](https://www.g2.com/sellers/formstack-llc)
- **Company Website:** https://www.Formstack.com
- **Year Founded:** 2006
- **HQ Location:** Fishers, IN
- **Twitter:** @Formstack (6,403 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/294140/ (232 employees on LinkedIn®)

**Who Uses This Product?**
  - **Who Uses This:** Insurance Agent, Account Manager
  - **Top Industries:** Insurance, Higher Education
  - **Company Size:** 85% Small-Business, 13% Mid-Market


#### What Are Formstack Sign's Pros and Cons?

**Pros:**

- Ease of Use (17 reviews)
- eSignature Functionality (9 reviews)
- Signatures (9 reviews)
- Convenience (7 reviews)
- Easy Signing (7 reviews)

**Cons:**

- E-Signature Issues (4 reviews)
- Form Issues (4 reviews)
- Poor Customer Support (4 reviews)
- Signature Issues (4 reviews)
- Confusing (2 reviews)

### 16. [altaFlow](https://www.g2.com/products/altaflow/reviews)
  altaFlow generates custom docs with a click, integrates eSignatures, creates webforms, and more without coding. It’s the ultimate tool to simplify, automate, and elevate your workflows.


  **Average Rating:** 4.5/5.0
  **Total Reviews:** 55
**How Do G2 Users Rate altaFlow?**

- **Ease of Use:** 8.0/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.3/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.4/10 (Category avg: 8.9/10)
- **Ease of Setup:** 7.7/10 (Category avg: 8.8/10)

**Who Is the Company Behind altaFlow?**

- **Seller:** [airSlate](https://www.g2.com/sellers/airslate)
- **Company Website:** https://www.airslate.com/
- **Year Founded:** 2006
- **HQ Location:** Brookline, Massachusetts
- **Twitter:** @airSlate (1,237 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/airslate/ (816 employees on LinkedIn®)

**Who Uses This Product?**
  - **Top Industries:** Financial Services, Higher Education
  - **Company Size:** 51% Mid-Market, 42% Small-Business


#### What Are altaFlow's Pros and Cons?

**Pros:**

- Cloud Services (1 reviews)
- Customizability (1 reviews)
- Document Management (1 reviews)
- Ease of Use (1 reviews)
- Easy Integrations (1 reviews)

**Cons:**

- Layout Issues (1 reviews)
- Not User-Friendly (1 reviews)
- Performance Issues (1 reviews)
- Poor Design (1 reviews)
- Poor Navigation (1 reviews)

### 17. [MonetizeNow](https://www.g2.com/products/monetizenow/reviews)
  MonetizeNow is an AI-powered unified CPQ, Billing, Metering, and Revenue platform purpose-built for modern B2B SaaS companies. Unlike legacy quote-to-cash tools that require stitching together separate CPQ, billing, and usage systems, MonetizeNow is built on a single contract-centric data model. This helps revenue teams manage the full lifecycle — quoting, approvals, amendments, renewals, usage billing, invoicing, revenue recognition, and reporting — from one unified platform. MonetizeNow supports complex SaaS monetization models including subscriptions, usage-based pricing, credits, minimum commits, ramps, co-terming and proration. Furthermore, MonetizeNow supports PLG, SLG and resellers seamlessly.


  **Average Rating:** 4.9/5.0
  **Total Reviews:** 40
**How Do G2 Users Rate MonetizeNow?**

- **Ease of Use:** 9.3/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.9/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.9/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.7/10 (Category avg: 8.8/10)

**Who Is the Company Behind MonetizeNow?**

- **Seller:** [MonetizeNow](https://www.g2.com/sellers/monetizenow)
- **Company Website:** https://monetizenow.io
- **Year Founded:** 2021
- **HQ Location:** Santa Clara, CA
- **Twitter:** @MonetizeNowIo (38 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/monetizenow/ (24 employees on LinkedIn®)

**Who Uses This Product?**
  - **Top Industries:** Computer Software
  - **Company Size:** 57% Mid-Market, 35% Small-Business


#### What Are MonetizeNow's Pros and Cons?

**Pros:**

- Customer Support (12 reviews)
- Ease of Use (12 reviews)
- Efficiency (7 reviews)
- Helpful (7 reviews)
- Billing Efficiency (6 reviews)

**Cons:**

- Missing Features (8 reviews)
- Difficult Customization (5 reviews)
- Limitations (3 reviews)
- System Limitations (3 reviews)
- Complexity (2 reviews)

### 18. [Signify](https://www.g2.com/products/signify-signify/reviews)
  Signify is a digital contracting platform that helps teams manage, automate, and track documents in one place. From sending and signing to organizing and archiving, it supports the full document workflow. Signify combines e-signatures, workflow automation, a team workspace, and a searchable archive. Set signing order and recipient roles, assign documents to folders with team-based permissions, and use structured templates to keep processes consistent across the company. You can see exactly what’s signed, pending, or in progress - and who’s involved. Permissions are clear, templates are shared with built-in rules, and folder access is controlled by team roles. Over 4.5 million documents have been sent through Signify, with 80% finalized in under 24 hours. Signify is built to support both the people who manage documents and those who sign them - making the entire process simple and efficient.


  **Average Rating:** 5.0/5.0
  **Total Reviews:** 80
**How Do G2 Users Rate Signify?**

- **Ease of Use:** 9.9/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.8/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 10.0/10 (Category avg: 8.9/10)
- **Ease of Setup:** 9.9/10 (Category avg: 8.8/10)

**Who Is the Company Behind Signify?**

- **Seller:** [Signify](https://www.g2.com/sellers/signify-c43861d1-1c92-4424-a554-3f971f9cd66a)
- **Company Website:** https://signifyapp.com/
- **Year Founded:** 2021
- **HQ Location:** Tbilisi, GE
- **LinkedIn® Page:** https://www.linkedin.com/company/signifyge/ (34 employees on LinkedIn®)

**Who Uses This Product?**
  - **Top Industries:** Computer Software, Human Resources
  - **Company Size:** 40% Mid-Market, 39% Small-Business


#### What Are Signify's Pros and Cons?

**Pros:**

- Ease of Use (48 reviews)
- Time Saving (26 reviews)
- Time-saving (23 reviews)
- Convenience (20 reviews)
- Digital Signature (18 reviews)

**Cons:**

- Document Management (4 reviews)
- Signature Issues (4 reviews)
- Slow Loading (4 reviews)
- Slow Performance (4 reviews)
- Difficult Editing (3 reviews)

### 19. [Signeasy API](https://www.g2.com/products/signeasy-api/reviews)
  Build eSignature into your app the fast and easy way Signeasy offers easy-to-integrate eSignature APIs with well-defined documentation for developers to quickly build, test, and go-live.


  **Average Rating:** 4.7/5.0
  **Total Reviews:** 6
**How Do G2 Users Rate Signeasy API?**

- **Ease of Use:** 10.0/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.0/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 3.3/10 (Category avg: 8.9/10)
- **Ease of Setup:** 10.0/10 (Category avg: 8.8/10)

**Who Is the Company Behind Signeasy API?**

- **Seller:** [Signeasy](https://www.g2.com/sellers/signeasy)
- **Year Founded:** 2010
- **HQ Location:** Dallas, Texas
- **Twitter:** @getsigneasy (1,681 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/2773503/ (64 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 83% Small-Business, 17% Mid-Market


#### What Are Signeasy API's Pros and Cons?

**Pros:**

- Digital Signatures (4 reviews)
- Ease of Use (4 reviews)
- Document Management (1 reviews)
- Document Sending (1 reviews)
- PDF Editing (1 reviews)

**Cons:**

- Pricing Issues (2 reviews)
- Complexity (1 reviews)
- Expensive Subscriptions (1 reviews)

### 20. [Contractbook](https://www.g2.com/products/contractbook/reviews)
  Contractbook is AI-powered contract software that centralizes your company's contracts in one location, allowing you to access valuable contract insights. With the speed of AI, you can import legacy contracts and static PDFs into one centralized library. Whether it's legal, financial, or other contract data, you'll have the information you need in seconds without extra admin work. With all your contracts in one place, you can regain control, stay informed, and act quickly on valuable insights. Goodbye contract surprises; Hello centralized overview. And if you want a better deal and money saved, Contractbook lets you be proactive and start renegotiations faster with automatic reminders. It also de-risks agreements and empowers your business to make more strategic decisions.


  **Average Rating:** 4.7/5.0
  **Total Reviews:** 73
**How Do G2 Users Rate Contractbook?**

- **Ease of Use:** 9.0/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.3/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 8.9/10)
- **Ease of Setup:** 7.9/10 (Category avg: 8.8/10)

**Who Is the Company Behind Contractbook?**

- **Seller:** [Contractbook](https://www.g2.com/sellers/contractbook)
- **Year Founded:** 2017
- **HQ Location:** Copenhagen, DK
- **LinkedIn® Page:** https://www.linkedin.com/company/contractbook (35 employees on LinkedIn®)

**Who Uses This Product?**
  - **Top Industries:** Computer Software, Information Technology and Services
  - **Company Size:** 75% Small-Business, 21% Mid-Market


#### What Are Contractbook's Pros and Cons?

**Pros:**

- Ease of Use (4 reviews)
- Easy Setup (2 reviews)
- Simple (2 reviews)
- Time Efficiency (2 reviews)
- Time-saving (2 reviews)

**Cons:**

- Bug Issues (1 reviews)
- Client Difficulties (1 reviews)
- Inadequate Reminders (1 reviews)
- Lack of Automation (1 reviews)
- Licensing Issues (1 reviews)

### 21. [E-Sign](https://www.g2.com/products/e-sign/reviews)
  E-Sign is a leading electronic signature service. Securely sign your documents digitally and save your business money and a great deal of time. Over 85% of agreements are completed in less than a day, and 48% in less than 15 minutes. E-Sign are the leading, trusted suppliers of electronic signature solutions. Operating from our own UK based data centres, we provide cost-effective digital signatures to streamline administrative tasks and significantly reduce document turnaround times. Redefine the way you conduct business with seamless, secure, and legally binding eSignature solutions. Embrace unparalleled efficiency and compliance and embrace the future of streamlined transactions.


  **Average Rating:** 4.7/5.0
  **Total Reviews:** 85
**How Do G2 Users Rate E-Sign?**

- **Ease of Use:** 9.5/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.1/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.7/10 (Category avg: 8.9/10)
- **Ease of Setup:** 9.6/10 (Category avg: 8.8/10)

**Who Is the Company Behind E-Sign?**

- **Seller:** [E-Sign](https://www.g2.com/sellers/e-sign)
- **Year Founded:** 2012
- **HQ Location:** Liverpool, England
- **Twitter:** @eSignHQ (718 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/3313526/ (14 employees on LinkedIn®)

**Who Uses This Product?**
  - **Who Uses This:** Director
  - **Top Industries:** Financial Services, Information Technology and Services
  - **Company Size:** 84% Small-Business, 10% Mid-Market


### 22. [CINCEL](https://www.g2.com/products/cincel/reviews)
  Cincel is the all-in-one trust platform that has allowed more than 500,000 to speed up agreements and processes with services such as digital signature (autograph signature + advanced signature), certification (NOM-151 Timestamps + Blockchain Notarization + Audit Footprint), identity ( Biometric Verification + Background Check) and document management (CLM). Cincel is the 1st Trust Services Provider in the Cloud in Mexico and Latin America, accredited as a Certification Service Provider (PSC) by the Ministry of Economy of Mexico. This enables us to offer trust services with legal and technological compliance through the Confianza 360, the all-in-one with trust services such as Advanced Signature with NOM-151, Identity Verification (Biometrics), CLM - Contract Lifecycle Management, Background Check, and PKI Infraestructure. CINCEL streamlines customer-oriented workflows and onboardings with legal compliance and legal certainty. It allows for reducing fraud and bureaucracy, replacing expensive, complex, and risky tools that do not comply with the law in Mexico and LATAM (ISO/IEC + NOM151 + NIST + AICPA).


  **Average Rating:** 5.0/5.0
  **Total Reviews:** 48
**How Do G2 Users Rate CINCEL?**

- **Ease of Use:** 10.0/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.6/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.9/10 (Category avg: 8.9/10)
- **Ease of Setup:** 9.9/10 (Category avg: 8.8/10)

**Who Is the Company Behind CINCEL?**

- **Seller:** [CINCEL](https://www.g2.com/sellers/cincel)
- **Year Founded:** 2019
- **HQ Location:** Juárez, MX
- **Twitter:** @cincel (1 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/cincel-it (30 employees on LinkedIn®)

**Who Uses This Product?**
  - **Top Industries:** Cosmetics, Information Technology and Services
  - **Company Size:** 62% Mid-Market, 36% Small-Business


### 23. [Conga Sign](https://www.g2.com/products/conga-sign/reviews)
  Secure. Seamless. Scalable. Conga Sign delivers enterprise-grade eSignature experiences that are fully embedded, fully branded, and fully compliant- wherever business happens Most eSignature tools are rigid, unbranded, and hard to integrate. Conga Sign changes that. It enables secure, compliant, and fully customizable signing experiences embedded directly into your systems. With flexible deployment, global compliance, and full audibility, Conga Sign helps teams move faster, reduce risk, and deliver better customer experiences. Fast, Frictionless Signing Experiences To eliminate delays and manual handoffs, signatures can be captured instantly, via embedded portals, mobile devices, or automated workflows. Agreements are generated, signed, and stored without switching systems or emailing attachments, reducing turnaround time and improving accuracy. Branded, Trustworthy Transactions Full white-labeling allows organizations to remove third-party branding from the signing experience. This ensures every agreement reflects your brand, builds trust with customers, and reduces the risk of phishing or spam-related drop-off. Works Where You and Your Customers Work The solution integrates seamlessly into your existing ecosystem, including Salesforce, MS Dynamics, Workday, and custom applications or websites. With flexible deployment via web app, API, or pre-built connectors, teams can embed signing directly into workflows and customer-facing experiences. Secure, Compliant, and Audit-Ready Meets global compliance standards including ESIGN, UETA, eIDAS, HIPAA, and GDPR. Provides robust audit trails, tamper-proof controls, and advanced authentication methods such as SMS codes, ID verification, and knowledge-based authentication, ensuring every signature is legally defensible. Flexible Deployment Across Teams and Systems Whether used by Sales, Legal, Finance, or Operations, the solution adapts to your business needs. It supports multiple deployment models from standalone use to embedded flows, making it easy to scale across departments without complex implementation. Scales from One to Millions From one-off agreements to high-volume onboarding or billing cycles, the platform handles large volumes of signatures with ease. Supports batch sending, time- or action-triggered workflows, and automated delivery, enabling teams to execute agreements at scale without sacrificing speed or control. Automated and Embedded Workflows A good eSignature solution doesn’t just capture signatures, it powers end-to-end agreement workflows. Agreements can be generated, signed, routed, and stored automatically, with data flowing back into your CRM or ERP. This creates a seamless experience for employees and customers, reducing operational overhead and accelerating revenue. Authentication Options: Email Authentication SMS PIN Secret Question Challenge Knowledge-Based Authentication (KBA) Login Credentials (including SSO) Government ID Check Biometric Comparison Certifications & Security Compliance Standards - Conga Sign meets leading industry standards for data protection and compliance: SOC 2 ISO 27001 FedRAMP GDPR HIPAA Connectors & Integrations - Conga Sign works out-of-the-box with major enterprise systems, including: Salesforce & Salesforce CPQ SharePoint Workday SMART Communications Guidewire PEGA Laserfiche Microsoft Dynamics CRM Box Why Conga Sign Stands out in the eSignature market: Brand-first experience: No third-party logos or domains — your brand stays front and center. Flexible integration: Works with any CRM, ERP, or portal via API or pre-built connectors. Compliance confidence: Meets global standards with full audit trails and secure authentication. Better value: 30–40% lower cost than leading competitors, with no feature gating. Part of a broader solution: Seamlessly connects with Conga Composer, CPQ, and CLM for end-to-end agreement workflows.


  **Average Rating:** 4.3/5.0
  **Total Reviews:** 39
**How Do G2 Users Rate Conga Sign?**

- **Ease of Use:** 8.2/10 (Category avg: 8.9/10)
- **Quality of Support:** 8.6/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 9.1/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.8/10 (Category avg: 8.8/10)

**Who Is the Company Behind Conga Sign?**

- **Seller:** [Conga](https://www.g2.com/sellers/conga)
- **Year Founded:** 2006
- **HQ Location:** 3200 Kirby Dr., Suite 500, Houston, TX 77098
- **LinkedIn® Page:** https://www.linkedin.com/company/conga/ (1,793 employees on LinkedIn®)
- **Phone:** (303) 465-1616

**Who Uses This Product?**
  - **Top Industries:** Computer Software
  - **Company Size:** 45% Mid-Market, 31% Enterprise


#### What Are Conga Sign's Pros and Cons?

**Pros:**

- Convenience (1 reviews)
- Ease of Use (1 reviews)
- Easy Setup (1 reviews)
- Easy Signing (1 reviews)
- Integrations (1 reviews)

**Cons:**

- E-Signature Issues (2 reviews)
- Signature Issues (2 reviews)
- Delays (1 reviews)
- Interface Usability (1 reviews)
- Not Intuitive (1 reviews)

### 24. [RocketSign API](https://www.g2.com/products/rocketsign-api/reviews)
  Legal documents made simple, for your users and you. From signing to filing, it's never been easier or more affordable to engage customers with API toolkits from the leader in online legal services.


  **Average Rating:** 4.0/5.0
  **Total Reviews:** 3
**How Do G2 Users Rate RocketSign API?**

- **Ease of Use:** 8.9/10 (Category avg: 8.9/10)
- **Quality of Support:** 8.3/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 8.3/10 (Category avg: 8.9/10)
- **Ease of Setup:** 8.9/10 (Category avg: 8.8/10)

**Who Is the Company Behind RocketSign API?**

- **Seller:** [Rocket Lawyer](https://www.g2.com/sellers/rocket-lawyer)
- **HQ Location:** San Francisco, California, United States
- **Twitter:** @RocketLawyer (13,415 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/rocket-lawyer-inc (483 employees on LinkedIn®)

**Who Uses This Product?**
  - **Company Size:** 67% Mid-Market, 33% Small-Business


#### What Are RocketSign API's Pros and Cons?

**Pros:**

- Easy Signing (1 reviews)
- Time-saving (1 reviews)

**Cons:**

- Limited Customization (1 reviews)
- Missing Features (1 reviews)

### 25. [AlphaTrust PRONTOSign™](https://www.g2.com/products/alphatrust-prontosign/reviews)
  AlphaTrust is a global leader in electronic signature and document process automation solutions. We are trusted by some of the largest enterprise and technology service provider companies worldwide for their most critical document transactions. AlphaTrust’s mission is to eliminate every need to process paperwork on paper driving significant competitive advantages and efficiencies for our customers. Since 1998 we’ve assisted enterprise customers globally to automate their critical paperwork with key capabilities such as electronic signatures and initials, approvals, acknowledgements, form data and document collection, and secure document delivery. Having delivered these solutions for over 18 years, we are able to help our customers with best practices in quickly automating their most complex document transactions. Through continuous innovation, we are delivering the most cost effective and advanced embedded and cloud-enabled esignature process automation solutions on the market. To learn more, visit www.alphatrust.com.


  **Average Rating:** 4.4/5.0
  **Total Reviews:** 7
**How Do G2 Users Rate AlphaTrust PRONTOSign™?**

- **Ease of Use:** 8.8/10 (Category avg: 8.9/10)
- **Quality of Support:** 9.4/10 (Category avg: 8.9/10)
- **Has the product been a good partner in doing business?:** 10.0/10 (Category avg: 8.9/10)
- **Ease of Setup:** 7.9/10 (Category avg: 8.8/10)

**Who Is the Company Behind AlphaTrust PRONTOSign™?**

- **Seller:** [AlphaTrust](https://www.g2.com/sellers/alphatrust)
- **Year Founded:** 1998
- **HQ Location:** Dallas, US
- **LinkedIn® Page:** https://www.linkedin.com/company/alphatrust (1 employees on LinkedIn®)
- **Phone:** +1.214.234.9200

**Who Uses This Product?**
  - **Company Size:** 71% Enterprise, 57% Mid-Market



    ## What Is E-Signature APIs Software?
  [Development Software](https://www.g2.com/categories/development)
  ## What Software Categories Are Similar to E-Signature APIs Software?
    - [E-Signature Software](https://www.g2.com/categories/e-signature)