Yaak

Fast, secure, and completely offline - Yaak prioritizes your privacy with local-only data storage, encrypted secrets, and zero telemetry. Unlike bloated alternatives, it keeps your sensitive API data on your machine where it belongs.

Git-native workflow integration - Store your API collections as plain-text files that work seamlessly with Git, DropBox, and other version control systems. Perfect for team collaboration while maintaining security through encrypted secrets.

Multi-protocol API support - Work with REST, HTTP, GraphQL, gRPC, WebSocket, and Server Sent Events all within a single workspace. No need to juggle multiple tools for different API types.

Extensible plugin system - Built on NodeJS, the plugin architecture allows custom authentication methods, template functions, and workflow enhancements tailored to your specific needs.

Developer-focused features include:

• Dynamic request templating with variables and request chaining
• Multi-window support for working on multiple projects simultaneously
• Comprehensive authentication handling OAuth 2.0, AWS v4, JWT, and custom methods
• Import flexibility from Postman, Insomnia, OpenAPI, and cURL
• Rich previews and streaming support for complex responses

Created by the original founder of Insomnia, Yaak represents a return to developer-first principles without corporate bloat. Available for Mac, Windows, and Linux.