Yaak

The API client for modern developers. Call REST, GraphQL, and gRPC APIs from a simple and intuitive app.

The Postman alternative you'll love. Offline, modern, open source, and extendable. Get started instantly by importing your data from Postman, Insomnia, or OpenAPI. Yaak appears simple at first, but comes with everything you need

• Reusable Variables: Create multiple environments. Reference variables or secrets across requests.
• Paste Curl Commands: Paste any Curl command into Yaak to import it into the current workspace.
• Intelligent Autocomplete: Suggestions for variable names, headers, etc. No more looking at docs.
• HTTP, GraphQL, or gRPC: Use the same tool for all your APIs
• Environment Variables: Define referencable variables in environments
• Workspaces and Folders: Organize into workspaces and nested folders
• Batch Send Requests: Quickly send all requests in a folder
• Cookie Management: Persist cookies and create multiple jars
• Multi-Window: Work on multiple workspaces at once
• Visual Response Previews: Render HTML, images, and more
• Responsive Design: Simple interface that adapts to any window size
• Import From Other Apps: Import Postman, Insomnia, OpenAPI, or cURL
• Paste Curl Commands: Paste a Curl command into the URL to import
• Copy as Curl Command: Copy any request as a runnable Curl command
• Local Data: All app data is stored locally on your machine