Build, test, and debug your APIs with a self-hosted tool that does what you actually need. Scripts, environments, OAuth 2.0, code generation, and an AI wizard that builds collections from your docs — no account required, no limits.
A free, open-source Postman-style API tester you run locally. Record browser requests, auto-generate chained tests, and ship them straight to your CI—no sign-ups, no cloud, just code.
Bruno
ReqResp is a fast, lightweight, and modern API testing app designed for developers, testers, and backend engineers. It helps you create, send, and analyze HTTP requests with ease — anytime, anywhere.
Postman
Use Test API for restful api testing. This postman alternative test rest api online and use post request online to test API endpoint.
KushoAI instantly generates and runs test suites for your APIs so you can push code effortlessly. Save hours of manual effort by delegating API testing to KushoAI. Unlock crash-free releases starting today.
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