Awesome Postman alternatives and Awesome Insomnia alternatives (why?).
Criteria: open-source, more than 200 stars and 2 contributors.
If you wish to contribute: start a pull request
- Restfox (repo) - Offline-first web HTTP client
- Hoppscotch (repo) - Open source API development ecosystem
- Firecamp (repo) - Open Source Postman Alternative inspired by VS Code DX
- RecipeUI (repo) - RecipeUI is the Postman alternative with type safety built in
- gRPC UI - An interactive web UI for gRPC, along the lines of postman
- Yaade (repo) - Yaade is an open-source, self-hosted, collaborative API development environment
- Prestige (repo) - A text-based in-browser HTTP client, an interface-less Postman alternative
- Bruno (repo) - Opensource IDE For Exploring and Testing APIs
- Yaak (repo) - The most intuitive desktop API client
- API Dash - API Dash is a beautiful open-source cross-platform API Client
- ezy (repo) - GUI client for gRPC/gRPC-Web
- BloomRPC - (unmaintained) The missing GUI Client for gRPC services
- Milkman - An Extensible Request/Response Workbench
- Insomnium - (unmaintained) Insomnium is a 100% local and privacy-focus open-source API client (based on Insomnia)
- Pororoca (repo) - A HTTP inspection tool with support for HTTP/2 and HTTP/3, an alternative to Postman
- Nightingale REST Client (repo) - A modern, open-source, resource-efficient REST API client for Windows
- VS Code REST Client (repo) - Send HTTP request and view the response in Visual Studio Code
- RESTClient - A Firefox debugger for RESTful web services
- restclient.el - HTTP REST client tool for emacs
- verb - Organize and send HTTP requests from Emacs
- rest.nvim - A fast Neovim http client written in Lua
- kulala.nvim - A minimal REST-Client Interface for Neovim.
- curl (repo) - Command line tool and library for transferring data with URLs (since 1998)
- HTTPie (repo) - HTTPie CLI: human-friendly HTTP client for the API era
- grpcurl - Like cURL, but for gRPC: Command-line tool for interacting with gRPC servers
- xh - Friendly and fast tool for sending HTTP requests
- posting - The modern API client that lives in your terminal
- curlie - The power of curl, the ease of use of httpie
- HttpRepl - Lightweight, cross-platform command-line tool that's supported everywhere .NET Core is supported
- ain - A HTTP API client for the terminal, uses curl, wget or httpie to make the actual calls
- evans - Evans: more expressive universal gRPC client
- httpYac (repo) - Yet another REST client to send REST, SOAP, GraphQL and gRPC requests
- ATAC (repo) - A simple postman like API client for terminal
- Step CI (repo) - Open-source API Test Automation framework
- Hurl (repo) - Hurl, run and test HTTP requests with plain text.
- Karate (repo) - Test Automation Made Simple
- Tavern (repo) - Automated RESTful API testing
- Venom - Manage and run your integration tests with efficiency
- pyresttest - Python Rest Testing
- runn - runn is a package/tool for running operations following a scenario
- scenarigo - An end-to-end scenario testing tool for HTTP/gRPC server
- Schemathesis (repo) - Specification-centric API testing tool for Open API and GraphQL-based applications
- Dredd - Language-agnostic HTTP API Testing Tool
- abao - REST API automated testing tool based on RAML
- HttpRunner (repo)
- k6 (repo) - A modern load testing tool, using Go and JavaScript
- Artillery (repo) - Load testing at cloud-scale
