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Restfox

Restfox is an MIT-licensed, offline-first, minimalistic HTTP and socket testing client for the web and desktop.

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Introduction

Restfox describes itself as an offline-first, minimalistic HTTP and socket testing client for the web and desktop. It runs as a web app, desktop apps (including Snap packages) and a Docker image.

It organises requests into collections with environments, supports scripting, and can test socket connections as well as HTTP. Data stays in the browser or on disk.

The project is very active, with v0.42.0 released in October 2026.

In the quality loop it supports lightweight manual API checks.

The source code is at flawiddsouza/Restfox on GitHub under the MIT licence, with about 2,800 stars; the most recent commit was on 10 November 2026.

Features

  1. Offline-first: Data stays local.
  2. Web and desktop: Same app in browser or desktop.
  3. Sockets: Test WebSocket and other sockets.
  4. Scripting: Scripts for setup and simple checks.
  5. Self-host: Docker image for a team web app.

Pros

  1. Lightweight: Fast and simple.
  2. Free to use: Open source under the MIT licence, so the core tool costs nothing to use.
  3. Actively maintained: The repository had commits as recent as 10 November 2026.

Cons

  1. Small team: Mostly maintained by one developer.
  2. Manual focus: Limited automation.
docker run --name Restfox -d -p 4004:4004 flawiddsouza/restfox:0.42.0

Resources:

Pricing

Restfox is free and open source under the MIT licence.

  1. Developers wanting a simple, local API client.
  2. Not a fit for CI test suites.

Conclusion

Restfox is a lean, open-source alternative to heavier API clients.

On CheckOps, Restfox is filed under the API & contract testing stage. Related tools listed here include Insomnia, Hoppscotch, Bruno, Yaak, API Dash and Postman. Before choosing, compare them on licence, supported languages and platforms, hosting model, and how well each fits your existing CI pipeline. Facts on this page were checked against the official website, documentation and repository on 11 November 2026; statements the vendor makes about its own product are marked as vendor claims.

Alternatives

Other tools on CheckOps that cover similar ground. Open a page, or compare one with Restfox side by side.