Fern: Docs, SDKs, and CLIs for your API
Start with OpenAPI. Generate SDKs in multiple languages, interactive API documentation, and an agent-first CLI.
Developer Tool
Summary
Yaak is a cross-platform, offline-first API client built with Rust and ReactJS that supports HTTP, GraphQL, WebSockets, SSE, and gRPC. It stores data as plain-text files for Git compatibility and extends via NodeJS plugins.
Highlights
- Offline-first design storing data as plain-text files, making it Git and DropBox friendly
- Supports five protocols in a single workspace: HTTP, GraphQL, WebSockets, SSE, and gRPC
- Built with Rust for speed and ReactJS for the UI, with NodeJS plugin extensibility
- Handles complex auth automatically including OAuth 2.0, JWT, Bearer, and API Key
- Imports workspaces from Postman, Insomnia, OpenAPI, Curl, and Swagger
auto-generated
Context
Audience
Backend and full-stack developers who need a fast, offline-capable API client with multi-protocol support and Git-based workflow integration
DomainAPI Development
Formatcross-platform desktop application
Accessfree, open source, available for Mac, Windows, and Linux
Source Overview
Yaak is an offline and Git friendly app for HTTP, GraphQL, WebSockets, SSE, and gRPC.
Topics
Related
PostmanInsomniaRustGraphQLgRPCOpenAPI
