Open source
Insomnia
Open source desktop client for testing HTTP, GraphQL and gRPC APIs
API ClientsOpen source API client
Alternatives to HTTPie
12 tools like HTTPie, chosen by what they do. About HTTPie
Freemium
Apidog
All-in-one API platform for design, testing, mocking and docs
API ClientsAll in one API platform
Curated
Requestly
Desktop API client with local projects, mocks and Postman import
API ClientsIntercept and mock requests
Freemium
Thunder Client
Fast REST and GraphQL API client for VS Code and JetBrains IDEs
API ClientsLightweight VS Code API client
Open source
Hoppscotch
Open source web app for building and testing API requests
API ClientsOpen source API tester
Open source
Yaak
Local-first desktop API client that stores requests as files in Git
API ClientsFast desktop API client
Freemium
Open source
Open source
Connect
Protobuf RPC library for browser and gRPC-compatible APIs
GraphQL and RPCBrowser friendly gRPC
Open source
httpbin
Simple HTTP service that echoes requests and returns test responses
Public APIsHTTP request testing serviceInactive
Open source
Altair GraphQL Client
Feature-rich desktop and web client for debugging GraphQL servers
GraphQL and RPCFeature rich GraphQL client
Open source
WireMock
Open source tool for simulating APIs in tests and development
Mocking TestingAPI mocking and simulation