24 Postman alternatives

ranked by how closely each fits what Postman does · Postman itself has a free plan

1. 1AApidogapidog.comREAL API Design-first Development Platform. Design. Debug. Test. Document. Mock. Build APIs Faster & Together.$9–$27/user/moFree planSelf-hostable
2. 2IInsomniainsomnia.restThe Collaborative API Development Platform$12–$45/user/moFree planOpen sourceSelf-hostable
3. 3TTestMaceclient.testmace.comYour IDE for working with an API
4. 4HHoppscotchhoppscotch.ioOpen source API development ecosystemOpen source
5. 5RRestCaserestcase.comDesign-first API Development, Supercharged!Free trial
6. 6FFirecampfirecamp.ioGet instant API playgrounds to test Rest, GraphQL, WebSocket and SocketIO APIsFrom $59/moFree planOpen sourceSelf-hostable
7. 7BBrunousebruno.comThe Git-Native API Client$6–$11/moFree planOpen source
8. 8WWebMaestrogetwebmaestro.comOpen Source REST API ClientFree planOpen source
9. 9AAtrahasisatrahasis.devAPI Client and Development Platform. Flexible by design.$12–$39/moFree plan
10. 10KKreyakreya.appThe cross-platform API testing tool.Free plan
11. 11ZZunoy MockAPIzunoy.comGenerate a production-quality mock API instantly—prototype and develop faster.Free plan
12. 12AApiArkapiark.devNo Login. No Cloud. No Bloat.FreeOpen source
13. 13KKeyRunnerkeyrunner.appTurn existing APIs into governed AI tools in under 5 minutes. Give agents capability, not credentials.From $49/user/moFree planSelf-hostable
14. 14AAPI Test Baseapitestbase.ioTest what your API really didFree
15. 15HHumlixhumlix.comGenerate tests for your web APIs in minutes.
16. 16SSoapUIsoapui.orgThe simplest and easiest way to begin your API testing journeyFree planOpen source
17. 17HHttpMasterhttpmaster.netMaster HTTP Testing and DebuggingFree
18. 18MMockServermockserver.inBuild faster, mock smarter.$10–$12/moFree plan
19. 19AAPIBuilderHQapibuilderhq.comDescribe the API you need. We build the request.From $12/moFree plan
20. 20DDotMockdotmock.comRun the whole loop. Break nothing real.$12–$49/moFree plan
21. 21KKeploykeploy.ioAI-powered testing platform: generate tests, mocks, and sandboxes from real API traffic. Any language. 90% coverage in minutes — no code changes.From $19/user/moFree planOpen sourceSelf-hostable
22. 22SStep CIstepci.comAutomate API Testing with our open-source API Test Automation frameworkFree planOpen sourceSelf-hostable
23. 23PPostmate Clientpostmateclient.comPrivacy-First Postman Alternative for VS CodeFree
24. 24AAPI Dashapidash.devTest, Visualize & Integrate APIs in a Dash ⚡️Free planOpen source

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