Restfox

Free#26 of 38 in API Clients

Restfox: A focused open-source client for HTTP, WebSocket, and automated response testing. Ranked #26 of 38 in API Clients by our editors (6.5/10); pricing: Open source; best for lightweight open-source HTTP testing.

6.5/10★★★☆☆Editor score

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At a glance

• Editor score
  6.5 / 10
• Pricing
  Open source
• Best for
  Lightweight open-source HTTP testing
• Paid from
  Free
• Automated test runs
  Yes
• Facts checked
  20 Sep 2026

• Where it wins

  • Supports HTTP requests, sockets, and WebSockets
  • Includes environments, scripts, plugins, and automated response tests
  • Available on web, Windows, macOS, Linux, and Docker

• Where it doesn't

  • Integrations and ecosystem coverage are limited
  • Focuses on testing rather than broader API lifecycle tooling
  • Workspace organization is narrower than full team collaboration suites

Our verdict on Restfox

Restfox is an open-source, offline-first client for developers testing HTTP requests, socket connections, and WebSocket workflows. It is available as a web application and desktop distributions for Windows, macOS, and Linux, with Docker deployment also supported. Its MIT License and lightweight focus make it a practical fit for developers who want a focused testing client without a paid-plan structure.

The feature set covers core request work and several useful automation layers. Environment variable management supports switching request contexts, while plugins and JavaScript request/response scripts allow customization. Automated JavaScript response tests add repeatable checks, and collections and workspaces provide structure for organizing related requests. This combination gives Restfox more depth than a basic request sender, particularly for developers who want HTTP and WebSocket testing in the same application.

Restfox is most suitable when the priority is lightweight, open-source testing across web and desktop environments. Docker deployment extends its installation options, while the web and desktop coverage supports different working preferences. Its scope is narrower than a broader API platform: integrations and ecosystem coverage are limited, and the product is centered on request testing, scripting, collections, and response validation. Teams looking for a focused client should consider Restfox; teams needing a wider API lifecycle or collaboration environment may prefer a more expansive alternative.

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Restfox pricing

Restfox fact sheet

Alternatives to Restfox

• PostmanA broad API workspace spanning requests, testing, mocking, specifications, and delivery workflows.9.4
• SoapUIA mature, testing-focused API client for REST, SOAP, GraphQL, and CI workflows.9.2
• ApidogA broad API workspace for teams that want design, testing, mocks, and CI/CD together.8.8

See all Restfox alternatives →

Featured on iTechGuides

Restfox is listed in our API Clients directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update