API clients and testing

Desktop and web API clients used to build, send, test and share API requests, such as Postman, and the open-source options that keep collections on your own devices or servers: offline-only Bruno and self-hosted Hoppscotch.

Postman

Postman is a commercial cloud API platform and client for building, testing and documenting APIs; these pages cover replacing it with the offline Bruno client or a self-hosted Hoppscotch instance.

Insomnia

Kong Insomnia is an Apache-2.0 API client with paid Pro and Enterprise plans, where most features need a Kong account. Pages here cover moving to Bruno or a self-hosted Hoppscotch instance.

WireMock Cloud

WireMock Cloud is the hosted, commercial mocking service from the company behind open-source WireMock. Pages here cover running mocks yourself with WireMock, Microcks or Mockoon.

SmartBear ReadyAPI

SmartBear ReadyAPI is a commercial API testing suite with functional testing, performance and virtualization modules. Pages here cover SoapUI Open Source, Bruno, Microcks, WireMock, k6 and JMeter.

Thunder Client

Thunder Client is a commercial API client extension for Visual Studio Code, with a limited free tier and paid plans. Pages here cover moving to Bruno or Hoppscotch.

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