Yaak

Yaak is a fast, privacy-first desktop API client for REST, GraphQL, Server-Sent Events, WebSocket and gRPC. It is built with Tauri, Rust and React.

Requests are organised in workspaces with environments and variables, and data is stored locally, with optional synchronisation through files that can be versioned with Git. Collections can be imported from other tools such as Postman or Insomnia, authentication schemes are supported, and plugins extend the application.

Yaak’s source code is published under the MIT licence. The application is free for personal use; a paid licence is required to use it at work.