--- title: RESTful JSON API Reviews meta_title: 'RESTful JSON API Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 18 reviews by the users' company size, role or industry to find out how RESTful JSON API works for a business like yours. aggregate_rating: rating_value: 4.8 review_count: 18 scale: '5' date_modified: '2026-05-15' parent_category: name: Financial Services url: https://www.g2.com/categories/financial-services --- # RESTful JSON API Reviews **Vendor:** Open Bank Project **Category:** [Financial Data APIs](https://www.g2.com/categories/financial-data-apis) **Average Rating:** 4.8/5.0 **Total Reviews:** 18 ## About RESTful JSON API The Open Bank Project's RESTful JSON API is a comprehensive open-source solution designed to facilitate secure and standardized access to banking data and services. By providing over 300 RESTful APIs, it enables developers to create innovative financial applications that interact seamlessly with banking systems. Key Features and Functionality: - Extensive API Catalog: Offers a wide range of APIs covering various banking functionalities, including account information, transaction history, payment initiation, and KYC checks. - Standardized Data Access: Utilizes RESTful principles and JSON format to ensure consistent and efficient data exchange between applications and banking systems. - Developer-Friendly Tools: Provides an API Explorer for developers to browse, discover, and test endpoints, facilitating a smoother development process. - Internationalization Support: Incorporates an internationalization framework (i18n) to adapt applications to different languages and cultural contexts, enhancing global usability. Primary Value and User Solutions: The RESTful JSON API addresses the need for secure, standardized, and efficient access to banking data, enabling developers to build a diverse range of financial applications. By offering a comprehensive suite of APIs, it empowers developers to create solutions such as personal finance management tools, online accounting services, savings applications, and peer-to-peer payment platforms. This fosters innovation in the financial sector and enhances the digital banking experience for end-users. ## RESTful JSON API Reviews ### 1. Simple, Flexible RESTful JSON APIs That Integrate Smoothly **Rating:** 5.0/5.0 stars **Reviewed by:** Sachin B. | Lead Engineer-RPA, Enterprise (> 1000 emp.) **Reviewed Date:** May 02, 2026 **What do you like best about RESTful JSON API?** What I like most about RESTful JSON APIs is how simple and flexible they are. JSON is lightweight and easy to work with, and REST APIs tend to integrate smoothly across different platforms and applications. **What do you dislike about RESTful JSON API?** One drawback of RESTful JSON APIs is that working with complex or very large response payloads can sometimes be inefficient. On top of that, keeping API versions compatible over time can be challenging. **What problems is RESTful JSON API solving and how is that benefiting you?** RESTful JSON APIs address the challenge of communication between different systems and applications in a simple, standardized way. For me, that means I can integrate services more easily, support better scalability, and accelerate development across platforms. ### 2. Easy, Reliable Data Exchange for Automation **Rating:** 4.0/5.0 stars **Reviewed by:** Hafiz Arsalan A. | Process Automation Engineer, Integrated Solutions | Avery Dennison Smartrac , Apparel & Fashion, Enterprise (> 1000 emp.) **Reviewed Date:** May 14, 2026 **What do you like best about RESTful JSON API?** best part is easy and reliable data exchange between systems for automation. **What do you dislike about RESTful JSON API?** Can be complex to set up and needs careful handling of authentication and data structure. **What problems is RESTful JSON API solving and how is that benefiting you?** RESTful JSON APIs solve manual data transfer between systems by enabling automatic, realtime integration. This reduces manual work and improves accuracy. It also speeds up automation across CRM and sales. ### 3. Lightweight, Fast, and Easy to Use with Wide Compatibility **Rating:** 5.0/5.0 stars **Reviewed by:** Nilesh B. | Java Developer, Enterprise (> 1000 emp.) **Reviewed Date:** March 19, 2026 **What do you like best about RESTful JSON API?** Lightweight and fast, it’s straightforward to understand and use, and it works well across a wide range of compatible systems. **What do you dislike about RESTful JSON API?** Lack of strong typing: JSON doesn’t enforce data types strictly, which can lead to inconsistencies. I also run into overfetching and underfetching issues, and versioning can be a challenge as requirements change. **What problems is RESTful JSON API solving and how is that benefiting you?** System integration enables smooth communication between the Angular frontend and the Spring Boot backend. I also like that it supports platform independence and helps with communication across microservices. ### 4. Faster data process using RESTful JSON format **Rating:** 4.5/5.0 stars **Reviewed by:** Dasaradha V. | Software Engineering Specialist, Mid-Market (51-1000 emp.) **Reviewed Date:** December 22, 2023 **What do you like best about RESTful JSON API?** Very simple and easy to use. Faster and Ease of implementation with other applications. Increase the scalability and number of features easily. **What do you dislike about RESTful JSON API?** Its difficult of maintain the state, the load will go on client. Its mostly used for public URI's, security is a concern. **What problems is RESTful JSON API solving and how is that benefiting you?** There is huge data of each customer which require based on particular case (E.g address details, financial summary, so on) ### 5. Its is very useful to integrate different application through API **Rating:** 5.0/5.0 stars **Reviewed by:** Nimesh B. | Specialist, Enterprise (> 1000 emp.) **Reviewed Date:** September 12, 2023 **What do you like best about RESTful JSON API?** It is very useful in connecting to different cloud applications through API using RESTful JSON **What do you dislike about RESTful JSON API?** Nothing as it is very useful and easy as compare to SOAP API **What problems is RESTful JSON API solving and how is that benefiting you?** It is helping me to connect my IDAM product with different target application through API to handle Identity management use cases. ### 6. RestAPI Rocks! **Rating:** 5.0/5.0 stars **Reviewed by:** LindaRuth M. | Data Architect, Small-Business (50 or fewer emp.) **Reviewed Date:** January 04, 2023 **What do you like best about RESTful JSON API?** Can connect at-ease to restapi interfaces exposed to many sources through Postman, a programming language like Python or Tableau for direct connection. **What do you dislike about RESTful JSON API?** A 400 bad request is returned and can mean a number of things such as content-type not correct, not specified,required inputs are not set or if is not understood. **What problems is RESTful JSON API solving and how is that benefiting you?** It is fast and easy to use, returning results in a hierarchical manner. I am using rest to bring in data from multiple sources for joining and doing data analysis. ### 7. Perfect match for interchange of data **Rating:** 5.0/5.0 stars **Reviewed by:** Neha K. | Learning Facilitator, Small-Business (50 or fewer emp.) **Reviewed Date:** September 13, 2022 **What do you like best about RESTful JSON API?** It is easy to understand and with the presence of get put post delete and other methods. Sending data for querying and receiving data from response becomes so easier. **What do you dislike about RESTful JSON API?** There's nothing much to dislike about JSON Restful API. Since the json object t is easily understood by ones who know JavaScript. There's nothing more I can ask for. However, I feel it's not much of a beginner friendly since it's hard or a little overwhelming to understand. **What problems is RESTful JSON API solving and how is that benefiting you?** I wanted to create apps like travel apps and weather apps where Restful JSON API comes into action the most which makes it so easy to get property data from response object. ### 8. Excellent tool for testing and integration purposes **Rating:** 4.5/5.0 stars **Reviewed by:** Jose G. | Technical Support Associate, Small-Business (50 or fewer emp.) **Reviewed Date:** September 15, 2022 **What do you like best about RESTful JSON API?** It's an efficient platform to Test and connect different integrations using RESTful services; it's been instrumental for the organization to offer a different kind of solutions to customers **What do you dislike about RESTful JSON API?** It's not a downside but a quality point to improve; increasing the number of simultaneous calls a service can get in a timeframe; would be highly appreciated. Super recommended **What problems is RESTful JSON API solving and how is that benefiting you?** Basically, the orchestration gets proofed using the tool, having the chance to test the services in different low environments (Dev, QA, Stress) before releasing them to production. ### 9. User firendly **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Alternative Dispute Resolution | Small-Business (50 or fewer emp.) **Reviewed Date:** October 08, 2022 **What do you like best about RESTful JSON API?** Though not a good example of a rich api , but is very user friendly, anyone with a bit knowledge of json and apis can simply use it in any product without much difficulty. **What do you dislike about RESTful JSON API?** There could be more features, like lets say a very deeply nested object is to be implemented, but restful json is not that rich , and is probably not good for that use case. **What problems is RESTful JSON API solving and how is that benefiting you?** Retreiving data from a source in a json format which would have otherwise been difficut or just one more step would have been added i.e. conversion of retreived data into json. ### 10. Easy and Quick to build APIs **Rating:** 5.0/5.0 stars **Reviewed by:** Mohit S. | Consultant, Enterprise (> 1000 emp.) **Reviewed Date:** March 31, 2022 **What do you like best about RESTful JSON API?** RESTful JSON APIs are quick to build and can help to build loosly coupled APIs. These APIs can be created by using multiple tools available like MuleSoft, Delboomi etc. **What do you dislike about RESTful JSON API?** RESTful JSON APIs are not much useful if we have to process very large data. JSON can be used for small data but when it comes to bigger chunks we may see issues in processing, APIs getting down etc. **Recommendations to others considering RESTful JSON API:** RESTful JSON APIs are easy to create, use and manage. You can use it if you want to creat fast and reliable APIs. **What problems is RESTful JSON API solving and how is that benefiting you?** RESTful JSON APIs can be used to connect different systems of an organisation. It has made our system more efficient and fast. We are not seeing any data loss or service downtimes. ### 11. Lightweight and scalable API integrations at your fingertips! **Rating:** 5.0/5.0 stars **Reviewed by:** Frank M. | Technical Lead, Mid-Market (51-1000 emp.) **Reviewed Date:** August 01, 2022 **What do you like best about RESTful JSON API?** They use existing frameworks and technology such the HTTP standard. JSON as a format is also more lightweight than XML or HTML. This makes the API fast and lightweight. **What do you dislike about RESTful JSON API?** There aren't any downsides other than perhaps not all frameworks or development environments support this type of API and thus implementation costs can be higher. **What problems is RESTful JSON API solving and how is that benefiting you?** Integrating varied software applications. ### 12. Great. However there is still room for improvement **Rating:** 4.5/5.0 stars **Reviewed by:** Ivy Mai V. | Founder of Humarance startup project, Small-Business (50 or fewer emp.) **Reviewed Date:** July 28, 2022 **What do you like best about RESTful JSON API?** The structure or the data syntax is very clear. **What do you dislike about RESTful JSON API?** There is no automatic static check and suggestion for correction for most common errors that many users, especially novice users, might make. **What problems is RESTful JSON API solving and how is that benefiting you?** It is providing me and my company with a platform and a frontend interface with which we can display our API services. ### 13. Easy and Quick **Rating:** 5.0/5.0 stars **Reviewed by:** Michael J. | Business Owner, Enterprise (> 1000 emp.) **Reviewed Date:** July 28, 2022 **What do you like best about RESTful JSON API?** Easy to understand and learn to use. It is complex flexable for what I use it for **What do you dislike about RESTful JSON API?** There is nothing that I dislike about RESTFul APIs **What problems is RESTful JSON API solving and how is that benefiting you?** Service-Oriented Architecture (SOA). Develop independent applications focused on specific requirements. Evolution of the application in isolation without affecting the overall ecosystem. ### 14. REST is the BEST **Rating:** 5.0/5.0 stars **Reviewed by:** Rohit N. | Principal Engineer, Enterprise (> 1000 emp.) **Reviewed Date:** July 26, 2022 **What do you like best about RESTful JSON API?** Ease of understanding Ease of implementation Wide community support Wide range of frameworks avaiable for implementation. **What do you dislike about RESTful JSON API?** There is nothing that I dont like about REST **What problems is RESTful JSON API solving and how is that benefiting you?** It is helping service oriented architecture and enabling microservice architectures. ### 15. Text based data format, easy to use, data efficient **Rating:** 4.0/5.0 stars **Reviewed by:** Saurabh R. | Software engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** July 28, 2022 **What do you like best about RESTful JSON API?** Text based API DRUPAL model Simple format **What do you dislike about RESTful JSON API?** Can't put some comments inside the code. **What problems is RESTful JSON API solving and how is that benefiting you?** I like verbose coding type, fast and efficient. ### 16. Easy, Fast, Reliable **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising | Small-Business (50 or fewer emp.) **Reviewed Date:** October 20, 2021 **What do you like best about RESTful JSON API?** Easy to understand, learn, handle and is flexible. **What do you dislike about RESTful JSON API?** Difficult to maintain state and sessions **What problems is RESTful JSON API solving and how is that benefiting you?** I use Django Rest Framework to develop the backend of web applications. It's easy to learn, handle, and flexible. ### 17. RESTful JSON API is powerfull component in data transfer over network. **Rating:** 5.0/5.0 stars **Reviewed by:** Pankaj C. | Sr. Android Developer, Small-Business (50 or fewer emp.) **Reviewed Date:** May 15, 2021 **What do you like best about RESTful JSON API?** The speed and performance of these APIs are better. **What do you dislike about RESTful JSON API?** Parsing using separate parameters is not good. **What problems is RESTful JSON API solving and how is that benefiting you?** Performance of the application has improved with the use of RESTFul JSON APIs. ### 18. Go-to solution for Service Oriented Architecture (SOA) **Rating:** 5.0/5.0 stars **Reviewed by:** Rohit N. | Principal Software Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** April 30, 2020 **What do you like best about RESTful JSON API?** Independently developed, deployed, and hosted for other applications to use. Go-to solution for Service Oriented Architecture (SOA) Standard HTTP protocol and well-defined request and response objects. Fluid request & response payload. Complete backward compatibility **What do you dislike about RESTful JSON API?** There is nothing that I dislike about RESTFul APIs **Recommendations to others considering RESTful JSON API:** Service-Oriented Architecture (SOA). Develop independent applications focused on specific requirements. Easily scalable application depending on the traffic. Evolution of the application in isolation without affecting the overall ecosystem. **What problems is RESTful JSON API solving and how is that benefiting you?** Service-Oriented Architecture (SOA). Develop independent applications focused on specific requirements. Easily scalable application depending on the traffic. Evolution of the application in isolation without affecting the overall ecosystem. ## RESTful JSON API Discussions - [What is difference between REST API and RESTful API?](https://www.g2.com/discussions/what-is-difference-between-rest-api-and-restful-api) - [What is JSON RESTful API?](https://www.g2.com/discussions/what-is-json-restful-api) - [What are the features of REST API?](https://www.g2.com/discussions/what-are-the-features-of-rest-api) - [View RESTful JSON API pricing details and edition comparison](https://www.g2.com/products/restful-json-api/reviews?section=pricing&secure%5Bexpires_at%5D=2026-06-21+16%3A42%3A36+-0500&secure%5Bsession_id%5D=2722f558-6ba4-48d6-88e8-2565f37242c3&secure%5Btoken%5D=141457ad1b19daa7b036f3bf4a9e92db6c811880a62a65415fe9d2c7df6f4545&format=llm_user) ## RESTful JSON API Integrations - [Angular](https://www.g2.com/products/angular/reviews) - [InstaPlug Instagram Widget](https://www.g2.com/products/instaplug-instagram-widget/reviews) - [Microsoft Azure Services](https://www.g2.com/products/microsoft-azure-services/reviews) - [Microsoft Power BI](https://www.g2.com/products/microsoft-microsoft-power-bi/reviews) ## Top RESTful JSON API Alternatives - [Merge Unified](https://www.g2.com/products/merge-unified/reviews) - 4.7/5.0 (251 reviews) - [Stripe Connect](https://www.g2.com/products/stripe-connect/reviews) - 4.4/5.0 (248 reviews) - [Finch](https://www.g2.com/products/finch-finch/reviews) - 4.7/5.0 (62 reviews)