Top Free A/B Testing Tools

Running an experimentation program is tricky. Whether your goal is to boost website conversion or improve user experience, there’s just so much you need to do to get things right. That’s why thousands of the world's leading enterprise brands like WMG, eBay, Ubisoft, Qualicorp, and others look to VWO for running and scaling their digital experimentation. VWO is the world’s leading web testing and conversion optimization platform that enables growing businesses to optimize their web experience across desktop, mobile, and other devices, to deliver a unique experience. Gathering user insights, prioritizing hypotheses, planning a roadmap, conducting tests, analyzing results - VWO lets you cover the whole 9 yards. VWO is thoughtfully designed for ease of experimentation. You can launch a test within minutes without any help from IT. With certifications including BS and ISO, VWO is fully GDPR compliant and provides robust security by design and default. With industry-leading 24/7 support and a 98% customer satisfaction rate, servicing a billion requests a day while ensuring 100% uptime – VWO is built for Enterprises! VWO’s global customer base includes brands like Vodafone, Samsung, Toyota, and eBay and has helped more than 4,500 brands across the globe to run over 600,000 experiments to date.

Instapage is the only complete landing page and CRO platform for marketers. Create, optimize, and personalize high-converting landing pages without coding skills, and accelerate your campaigns and ROI all in one place.

Statsig combines experimentation, feature flagging, product analytics, and session replays into a single, powerful platform - helping your team build faster, and make smarter product decisions. All of Statsig's products are powered by a single of data and infrastructure, and can be run in your data warehouse. Today, thousands of companies rely on Statsig, including OpenAI, Notion, Atlassian, Microsoft. Statsig can help you... - Iterate Faster: Turn ideas into tests or scale your current experimentation program with the world’s most powerful experimentation infrastructure & stats engine. - Ship Smarter: Speed up releases without increasing risk. Link every release to product data for automated alerts and guardrails, then give your whole team the power to ship and watch the magic happen. - Learn more from your data: Empower every stakeholder on your team — from Product to Engineering to Data —with unified analytics, backed by one set of data and a full set of product analytics tools. The Statsig team has worked helped build data-driven cultures at some largest enterprises in the world - and we're here to help you, wherever you are on your journey. And no matter how big (or small) you are, our tools will scale to meet your needs and help you cut spend. Are you ready to start your data-driven journey?

Introducing Unbounce, a high-converting landing page creation and optimization platform that helps you build conversion-optimized campaigns that’ll help you scale your marketing without limits.

Founded in 2014 and headquartered in Oakland, California, LaunchDarkly serves over 5,500 enterprises, including a quarter of the Fortune 500. As the industry’s leading end-to-end feature management platform, LaunchDarkly enables software and AI development teams to de-risk every release, accelerate AI development, remove barriers to experimentation, and increase developer productivity. By separating feature releases from deployments, teams can ship confidently, experiment safely, and continuously optimize software delivery—ensuring governance, control, and velocity at scale. The LaunchDarkly platform is built on four core components that enable teams to release with confidence and drive business impact. Guarded Releases provide real-time monitoring, progressive rollouts, and instant rollbacks, allowing teams to minimize risk and prevent faulty features from impacting users. AI Configurations enable teams to iterate on models and prompts in real time, refining AI behavior without requiring redeployment. Experimentation unifies feature delivery and testing, helping teams analyze feature performance and ship the best-performing variations based on real data. Release Management standardizes best practices at scale, providing automated rollout pipelines, structured governance, and real-time visibility into release health. At its core, LaunchDarkly empowers organizations to move faster while reducing risk. With automated feature rollouts, real-time release insights, and seamless integration with CI/CD workflows and data platforms like Snowflake, development teams can increase productivity, reduce downtime, and bring new innovations to market faster than ever. Organizations that adopt LaunchDarkly gain a competitive edge by accelerating release velocity, minimizing risk, and continuously optimizing customer experiences to maximize business impact.

MoEngage is an insights-led customer engagement platform trusted by 1,350+ global consumer brands, including Edelweiss, Samsung, McAfee, Flipkart, Domino’s, Nestle, Deutsche Telekom, OYO, and more. Enterprises use MoEngage to be more agile, efficient, and independent. They achieve this by increasing campaign velocity, reducing the time to go live, optimizing at scale, and eliminating redundancy while maintaining data security and privacy. > Data Ingestion and Management: MoEngage combines data from multiple offline and online sources to help brands gain a 360-degree view of their customers. > Customer, Journey, and Campaign Insights: MoEngage Analytics provides marketers and product owners with real-time insights into customer behavior, journey, product usage, preferences, and interests. > Segmentation and Personalization: Brands can leverage MoEngage’s Real-time Segmentation and Personalization suite to orchestrate journeys and build 1:1 experiences across the website, mobile, email, social, and instant messaging channels. > Transactional Messaging/Critical Alert Infrastructure: MoEngage Inform, the transactional messaging infrastructure, helps brands unify their promotional and transactional communication on a single platform, enabling better insights and lower maintenance costs. > Proprietary AI Agents and Machine Learning: MoEngage’s AI Agents help marketers develop winning copies and creatives, build customer segments, craft relevant journeys, optimize campaigns and channels that boost engagement, and reduce campaign go-live times. MoEngage complies with GDPR, CCPA, SOC2 Type 2, CSA STAR Level 2, ISO 27001:2022, HIPAA, PIMS ISO 27701: 2019, and the BCMS ISO 22301: 2019 requirements to fulfill the data privacy and security needs of enterprise brands. For over a decade, leading consumer brands in 60+ countries have been using MoEngage to reach enterprise goals that are most important to their global business without compromising quality or speed of execution. Our ever-expanding partner ecosystem helps enterprise brands build a lean, flexible, and reliable martech stack. With offices in 13 countries, MoEngage is backed by Goldman Sachs Asset Management, B Capital, Steadview Capital, Multiples Private Equity, Eight Roads, F-Prime Capital, Matrix Partners, Ventureast, and Helion Ventures.

Webtrends Optimize is the highest rated A/B Testing platform on G2.com. In addition to A/B testing we also offer features like MVT, Personalisation, Social Proofing, Product Recommendations, Surveys & other CRO/UX tools (Urgency messaging, Exit Intent Pop-ups, Hello bars etc.), all wrapped up in integrations with your platforms for Analytics (GA4, Fullstory, Contentsquare etc.), Data Warehouses (Snowflake, Bigquery, Databricks, etc.) and CDPs (Shopify, Bloomreach, Salesforce etc.) Uniquely, Webtrends Optimize offers all of our features and tools in a single, all-inclusive package. That includes no limits on number of metrics captured, experiments run, users in the platform, etc. We also have the best-rated support team of all platforms, and guided onboarding to make sure you start on the right foot. There are no tiers, paywalls or upgrades required to access anything in the platform, and our SaaS licence pricing is based purely on the number of sessions your website gets, and scales appropriately as you grow. So, you always get access to everything, at a price that is fair.

ClickFunnels is one of the world’s most popular online sales funnel platforms where users can quickly and easily create beautiful sales pages that convert visitors into leads and paying customers. No tech, design, or coding experience necessary. Hundreds of plug n’ play templates at your fingertips. Or customize your own funnels. ClickFunnels comes with training, tutorials, and smooth 3rd party app, email, and payment integration. Users have built working funnels in as little as 10 minutes!

PostHog is the open-source, all-in-one platform that helps engineers build better products. We enable software teams to capture events, perform analytics, record user sessions, conduct experiments and deploy new features, all in one platform. - DESIGN BETTER: Robust product analytics. Multivariate A/B experiments. User segmentation and 50+ integrations. PostHog has everything you need to build better products. - BUILD BETTER: Roll out new features safely with feature flags, debug issues with session recordings and plan new features with correlation analysis -- all in PostHog. - DEVELOP BETTER: Expect an SDK, API, event pipelines, an SQL-like syntax for deep analysis, and an open-source app platform. - SCALE BETTER: US or EU hosting available, powered by ClickHouse. Everything is SOC2 certified, GDPR-ready, and HIPAA-compliant. PostHog is scalable to teams of any size and priced based on usage. It's entirely open source, so you can inspect every line of code, make suggestions or even build directly on top of the product to add new features and integrations.

Algolia empowers businesses to deliver lightning-fast, AI-driven search and discovery experiences that convert. Trusted by over 18,000 companies and 500,000 developers, Algolia’s API-first platform handles 1.75 trillion searches annually across e-commerce, SaaS, marketplaces, media, and more. From helping retailers boost conversions with personalized product discovery to enabling companies to surface relevant content instantly, Algolia delivers scalable, reliable, and intuitive solutions built for performance. With seamless integration into any tech stack, user-friendly tools for business teams, and advanced AI customization, Algolia makes it easy to launch tailored digital experiences—accelerating time to value and driving measurable business results. Learn more: https://www.algolia.com/

Omniconvert Explore is an advanced experimentation tool designed to assist agencies, development and product teams, as well as marketers who may have limited IT support. This software solution empowers users to launch experiments that can enhance decision-making and optimize user experiences across various digital platforms. By providing a comprehensive suite of features, Omniconvert Explore caters to a diverse audience looking to leverage data-driven insights for improved performance. The software enables users to design and run A/B tests, personalize on-site experiences, collect customer feedback, and segment audiences, all from one interface. Omniconvert Explore is used by e-commerce managers, CRO specialists, and digital marketers to identify friction points in the buying journey, test improvement ideas, and implement validated changes without relying heavily on developers. Typical use cases include: - improving add-to-cart rates - reducing checkout abandonment - increasing average order value through personalization and experimentation. Omniconvert Explore integrates with major e-commerce platforms such as Shopify, Magento, WooCommerce, and custom online stores. Key capabilities: -Visual A/B and split testing tools for website elements and user flows - Audience segmentation based on behavior, traffic source, and attributes - On-site personalization with dynamic content and recommendations - Integrated survey and feedback widgets to capture customer insights - Real-time performance tracking and experiment analytics - Integrations with analytics, CRM, and marketing platforms By combining testing, personalization, and customer research in a single tool, Omniconvert Explore helps teams make objective, measurable improvements to the user experience. It is designed to support data-driven decision making and continuous experimentation across e-commerce touchpoints. Why Users Choose Omniconvert E-commerce and CRO professionals choose Omniconvert Explore because it unifies A/B testing, on-site personalization, and customer feedback tools into a single workspace. This helps teams move faster from insight to action and validate ideas through experimentation. Users report that Omniconvert Explore’s visual editor, audience segmentation, and reporting dashboards make it easy to design experiments and track performance without extensive technical setup. The platform’s integrations with major e-commerce systems and analytics tools allow for consistent measurement across marketing and user experience initiatives.

The platform offers multiple solutions to support marketers at every step of marketing campaign creation using landing pages: from design, through the campaign's launch, integration, optimization, to conversion. Landingi platform has an incredibly intuitive, pixel-perfect drag & drop editor where you can design beautiful landing pages, mobile pages, and sales funnels effortlessly. With 400+ ready-to-use templates tailored to suit various industries and serve marketing campaign goals, the creation process of a high-converting landing page becomes time-saving and smooth. Landingi offers 150+integrations to automate customer's workflow, boost marketing effectiveness, and, ultimately, reach goals faster.

Simplify your developer experience with the world's first AI-augmented software delivery platform. Upgrade your software delivery with Harness' innovative CI/CD, Feature Flags, Infrastructure as Code Management, and Chaos Engineering tools. We are a software delivery platform that helps developers and infrastructure engineers build and ship code for cloud and on-premise projects. We automate the continuous integration and continuous delivery (CI/CD) process to help teams build faster, ship more frequently, and improve quality, efficiency, and governance. We help companies in four key areas: Number one, we accelerate innovation through DevOps modernization. We provide an approach for software delivery that automates processes, reduces manual interventions, consolidates tools, and accelerates time-to-market for new products, features, and fixes. Number two, we improve developer experience. We give you the ability to attract, retain, and onboard high-caliber engineering talent while fostering a culture of continuous innovation and improvement. Number three, we secure software delivery. We give you the ability to integrate security into every phase of the SDLC. And last but not least is, we optimize cloud costs. We give you the ability to eliminate waste and to ensure that appropriate cloud resources are allocated at the right place at the right time.

We help eCommerce businesses grow sales through deep customer understanding and seamless multi-channel interactions. Our approach collects real-time data on transactions, preferences, and website behavior, stored and managed in our Customer Data Platform. This data powers our Omnichannel Marketing Automation and AI-driven personalization. Our platform, co-developed with e-commerce marketers, introduces innovative tools like zero-party data collection, AI email design, and flexible workflows to address e-commerce challenges. Trusted by global brands like Adidas, Converse, and Crocs, we consistently deliver a 5-10x conversion boost and 40% annual growth, recognized by G2 for excellence. Think of us as an extension of your marketing team, always focused on delivering value, starting with a custom Growth Plan tailored to your business. More information: www.salesmanago.com

Optimizely Feature Experimentation isn’t just a feature flagging tool—it’s the gold standard for controlled, data-driven innovation. It’s the only platform that seamlessly integrates feature flagging and experimentation with built-in collaboration tools, so teams can move fast without breaking things. Ship with confidence. Experiment with precision. Reduce risk by testing every feature before a full rollout, proving impact with real user data, and optimizing every digital touchpoint—across web, mobile, and server-side applications. From idea to deployment, Optimizely empowers you to make every release smarter, safer, and more successful.