Insomnia
Open source desktop client for testing HTTP, GraphQL and gRPC APIs
12 tools like Yaak, chosen by what they do. About Yaak

Open source desktop client for testing HTTP, GraphQL and gRPC APIs

Fast REST and GraphQL API client for VS Code and JetBrains IDEs


Desktop API client with local projects, mocks and Postman import

Friendly command-line and desktop client for testing HTTP APIs

Open source web app for building and testing API requests

All-in-one API platform for design, testing, mocking and docs


Open source API testing framework with YAML workflows and CI support

API mocking library for browser and Node.js

Protobuf RPC library for browser and gRPC-compatible APIs

Feature-rich desktop and web client for debugging GraphQL servers