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API testing tools

37 products on Product Hunt that people compare with each other, in 5 groups of direct competitors.

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Launched on Product Hunt (2026 so far) · tap a year

Groups of direct competitors

Some rivals

API clients for REST and GraphQL

8products
  • ApidogAll-in-one Collaborative API Development Platform
  • Bruno Reinventing the API Client | Local, Native Git, Open Source
  • PostmanBuild APIs together
  • HoppscotchOpen source API development ecosystem.
  • Thunder ClientHand-crafted lightweight Rest client for testing APIs
  • NativeRestNative REST API client for Windows, macOS and Linux
Few rivals

API load testing tools

5products
  • ClobbrEasy API endpoint load testing without breaking the bank
  • GatlingHigh-performance load testing for modern engineering teams.
  • tquic_clientA high-performance CLI to benchmark HTTP/3 servers
  • LoadFocusLoad test your app & API's with 1000's of concurrent users.
  • LFAffordable/free web and API load testing for developers
Few rivals

API mocking tools

5products
  • MockAPI DogInstant mock REST & LLM APIs - free, no signup required
  • PlatapiConvert OpenAPI docs to working dynamic mock endpoints.
  • DecoyLocal server mocks in macOS, all in a lightweight native app
  • MockphineMock blocked APIs, passthrough ready routes, see live source
  • ReffreshSimple. No code. Mock APIs.
Few rivals

HTTP debugging proxies and interceptors

5products
  • RequestlySimple & Powerful HTTP Interceptor built for teams
  • NetworkSpyHTTP(s) proxy debugger with custom viewer
  • FluxFix production bugs by replaying them locally
  • Webhook CatcherInstant Webhooks. Inspect, Forward, and Respond Fast.
  • ProxymanDebug HTTP(s) in few clicks
Few rivals

AI API testing assistants

4products

10 more products in this market fit no group: one of a kind here, or with too little on their Product Hunt page to tell.

Markets come from the alternatives Product Hunt lists for each product. Groups are drawn by Claude from a few words on what each product is, so read them as a first cut. Launch counts are of the products we have pages for, which lean recent: compare groups with each other rather than reading them as a census. Product Hunt categories here: Testing and QA software (29), Automation tools (5), Command line tools (4). Updated 2026-10-14.