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Offline-First HTTP & Socket Testing Client for Web & Desktop
Minimalistic API testing client that works offline, supporting HTTP, WebSocket, and GraphQL requests across web browsers and desktop platforms with plugin extensibility.

Restfox is a lightweight, offline-first API client designed for developers who need reliable HTTP and socket testing without unnecessary complexity. Built with Vue and available as both a web application and native desktop client, it prioritizes speed and simplicity while maintaining powerful testing capabilities.
Deploy Restfox however you work best: install native apps via Homebrew, Snap, or Scoop; run the progressive web app in any modern browser; or spin up a Docker container for team environments. The offline-first architecture ensures your API collections and test history remain accessible without internet connectivity, making it ideal for local development and air-gapped environments.
The interface includes environment variable management for multi-stage testing, response history tracking, and a plugin system that extends functionality to match your workflow. Whether you're testing REST APIs, GraphQL endpoints, or WebSocket connections, Restfox provides the essential tools without the learning curve of enterprise platforms. The MIT license and active development community make it a sustainable choice for individual developers and teams alike.
When teams consider Restfox, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Local Development Testing
Test APIs during development without internet dependency, maintaining full functionality on flights or in offline environments
Self-Hosted Team Environment
Deploy via Docker for team access while keeping sensitive API data within your infrastructure
Multi-Environment API Validation
Use environment variables to switch between dev, staging, and production endpoints without duplicating request collections
WebSocket Connection Testing
Debug real-time socket connections alongside traditional HTTP requests in a unified interface
No. Restfox is offline-first, meaning all core functionality works without internet access after installation. Your collections and history are stored locally.
Yes. Restfox can be deployed via Docker on your own infrastructure, giving you full control over data and access.
Restfox supports HTTP/HTTPS requests, WebSocket connections, and GraphQL queries, covering the most common API testing scenarios.
Restfox includes a plugin architecture that allows you to extend functionality. Check the video demonstration and documentation for implementation details.
The README does not specify Postman import capabilities. Check the official documentation or GitHub issues for current import/export format support.
Project at a glance
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