Yaak

Yaak is a modern, local-first API client designed for developers who value speed, privacy, and seamless Git integration. Created by Greg, the original creator of Insomnia, Yaak offers a clean, clutter-free interface for testing and debugging APIs across multiple protocols including REST, GraphQL, gRPC, WebSocket, and Server Sent Events. The application stores all data locally with encrypted secrets and zero telemetry, making it ideal for security-conscious teams.

• Local-First Architecture provides complete data privacy with local-only storage, secrets encryption, and no telemetry collection, ensuring your API data never leaves your machine unless you explicitly export it.

• Git Integration allows you to optionally store workspace data as plain-text files, enabling version control through Git, DropBox, or other file sync services with built-in Git UI for collaboration.

• Multi-Protocol Support lets you work with REST, HTTP, GraphQL, gRPC, WebSocket, and Server Sent Events all within a single workspace, eliminating the need for multiple tools.

• Dynamic Request Templating enables the use of variables, template functions, and request chaining to build complex API workflows with ease.

• Comprehensive Authentication automatically handles OAuth 1/2, AWS v4, JWT, Basic, Bearer, API Key, and custom authentication methods.

• Full Request Debugging provides detailed inspection of redirects, cookies, payloads, headers, and more for thorough API troubleshooting.

• Extensible Plugin System offers flexible plugins for authentication, template functions, and custom functionality to extend Yaak's capabilities.

• Import Flexibility supports importing data from Postman, Insomnia, OpenAPI, Curl, and Swagger to integrate with existing workflows.

To get started, download Yaak for Mac, Windows, or Linux from the official website. Import your existing collections from Postman, Insomnia, or OpenAPI specifications, or start fresh by creating a new workspace. The 30-day free trial activates automatically on first launch with no credit card required.