- PostmanFree tier; paid team/enterprise tiers
The default GUI for manual and automated API testing: build requests/collections, chain calls, run automated test scripts and mock servers.
2 reviews 79 up
75 - SoapUIFree open source; paid ReadyAPI tier
Long-standing API testing tool for REST and SOAP, with a free open-source edition and a paid Pro edition (ReadyAPI).
2 reviews 88 up
77 - InsomniaFree core; paid team tier
Lightweight REST/GraphQL/gRPC client with a clean UI, environment variables, and plugin support.
3 reviews 80 up
68 - REST AssuredFree
Java DSL for testing REST APIs; integrates directly into JUnit/TestNG suites for assertion-heavy API test code.
3 reviews 30 up
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The Software Testing Toolbox
The definitive directory for modern quality engineering. Discover, compare, and vote on the tools shaping software testing.
5 tools / 15 families / community maintained