Best API Testing

SoapUI Open Source is the free, community edition of the tool that evolved into ReadyAPI. It remains a powerful, standalone tool for functional and load testing of SOAP and REST APIs. It provides a co...

Karate DSL is a unique open-source tool that combines API test automation, performance testing, mocks, and even UI automation into a single, cohesive framework. Its most notable feature is that it all...

Apteco is a relatively new API testing tool focusing on ease of use and collaboration. Freelancers can quickly discover APIs, generate requests, and validate responses through a visual interface. It s...

Testsigma is a no-code test automation platform that supports API testing alongside web and mobile testing. Its visual interface and self-healing capabilities simplify test creation and maintenance....

Cloudmersive is a cloud-based API testing and validation platform that helps developers test, validate, and monitor APIs. It offers comprehensive tools for API management and ensures the reliability o...

NLocal is an open-source load testing tool built on Node.js, offering a simple and scriptable approach to performance testing. It allows users to define test scenarios using JavaScript, making it acce...

ReadyAPI is the commercial, enterprise-grade evolution of SoapUI. It provides a comprehensive suite for functional, security, and load testing of APIs. It is designed for large-scale enterprise enviro...

Artillery is a modern, powerful performance testing toolkit built for Node.js. It is designed to be highly modular and cloud-native, making it an excellent choice for testing serverless architectures...

LoadUI is a free load testing tool with a GUI, primarily focused on API testing. It allows users to create load tests using a visual interface and supports various protocols, including HTTP, REST, and...

LoadUI NG is an open-source load testing tool with a user-friendly GUI. It supports various protocols and allows users to create test scenarios using a scripting language. While it offers a free commu...

Strike is a Bitcoin-only platform that leverages the Lightning Network to provide near-instant, low-cost transactions. It is designed for users who believe in the Bitcoin mission and want a simple, ef...