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HTTP Toolkit

Open-source desktop app for intercepting, inspecting and rewriting HTTP and HTTPS traffic.

Free plan + paidHTTP and network debugging tools
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About HTTP Toolkit

HTTP Toolkit is a debugging proxy for developers who need to see exactly what their apps send and receive over HTTP and HTTPS. Its main selling point is targeted interception: with one click it can capture traffic from a single browser window, terminal, Node.js, Python, Java or Ruby process, Docker container, or an Android or iOS app, instead of routing your whole computer through a proxy. You can browse and filter captured requests, view bodies with formatting for JSON, Protobuf and other formats, pause traffic with breakpoints to edit it live, and send your own requests from a built-in client. The core app is free and open source and runs on Windows, macOS and Linux. A paid Pro plan adds automated rules for mocking responses, redirects and injected errors, HAR import and export, and API validation, with team billing on request. It is a good fit for web, API and mobile developers who want a modern interface without heavy setup.

Best for: Developers debugging web, API or mobile app traffic who want quick per-app interception.

Pros and cons

What works

  • One-click interception of single apps, containers and devices
  • Free, open-source core with breakpoints and a request client
  • Runs on Windows, macOS and Linux

Why people leave

  • Automated mocking and rewrite rules need the paid Pro plan
  • Prices aren't shown without JavaScript on its pricing page
  • Focused on HTTP; not a general packet analyser

Top HTTP Toolkit alternatives

See all 4
  1. 1Proxyman logo
    Proxyman

    Polished native Mac proxy with strong iOS device and simulator support.

    68.8
  2. 2Charles Proxy logo
    Charles Proxy

    Long-established cross-platform debugging proxy with throttling and rewrite tools, for a one-off licence.

    64.8
  3. 3mitmproxy logo
    mitmproxy

    Fully free and scriptable in Python, with terminal and web interfaces.

    61.8
  4. 4Postman logo
    Postman

    Better if you mainly build and test API requests rather than intercept existing traffic.

    47.0

Why people left HTTP Toolkit

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

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HTTP Toolkit: common questions

Is HTTP Toolkit free?

HTTP Toolkit has a free plan and paid plans. Free plan: Yes (Hobbyist) (checked on HTTP Toolkit's own site).

Is HTTP Toolkit open source?

No, HTTP Toolkit is not open source. Open-source alternatives include mitmproxy.

What platforms does HTTP Toolkit run on?

HTTP Toolkit is available for Windows, macOS and Linux.

What are the best alternatives to HTTP Toolkit?

The highest-ranked HTTP Toolkit alternatives right now are Proxyman, Charles Proxy and mitmproxy. See the full ranked list for pricing, platforms and verified facts.

See all 4 HTTP Toolkit alternatives