Software Alternatives, Accelerators & Startups

modheader

Free browser extension to modify HTTP request and response headers. No sign-up. Works on Chrome, Firefox, and Edge.

Some of the top features or benefits of modheader are: Easy HTTP Header Modification, User-Friendly Interface, Profile Management, Cross-Browser Support, and Useful for Development and Testing. You can visit the info page to learn more.

modheader

modheader Alternatives & Competitors

The best modheader alternatives based on verified products, community votes, reviews and other factors.
Latest update:

  1. A Powerfulย API Mockingย andย Testingย Tool.

    Key Requestly features:

    Redirect URL Block Network Requests Modify Request & Response Header Modify Response

    Open Source freemium

    /requestly-alternatives
  2. HTTP proxy / HTTP monitor / Reverse Proxy.

    Key Charles Proxy features:

    Comprehensive HTTP/HTTPS Debugging User-Friendly Interface Support for Various Platforms Throttling Feature

    /charles-proxy-alternatives
  3. AI agents that spec, build, test, and ship code โ€” with voice chat, deep GitHub integration, and zero LLM markup.

    Key JackHamr features:

    AI-Powered Music Creation Streamlined Workflow Accessibility for Non-Musicians Creative Inspiration Tool

    Try for free freemium

    Try for free
  4. Fiddler is a debugging program for websites.

    Key Fiddler features:

    Comprehensive Debugging Cross-Platform Compatibility Custom Scripting User-Friendly Interface

    /fiddler-alternatives
  5. Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.

    Key HTTP Toolkit features:

    Ease of Use Cross-Platform Compatibility Open Source Comprehensive Debugging Features

    Open Source freemium โ‚ฌ7 / Monthly (for a Pro subscription)

    /http-toolkit-alternatives
  6. Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.

    Key Proxyman.io features:

    User-Friendly Interface Cross-Platform Support Real-time Traffic Interception HTTPS Decryption

    Open Source $49 / Annually

    /proxyman-io-alternatives
  7. EditThisCookie is a cookie manager. You can add, delete, edit, search, protect and block cookies!

    Key EditThisCookie features:

    User-Friendly Interface Functionality Customization Free to Use

    Open Source

    /editthiscookie-alternatives
  8. Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.

    Key Wireshark features:

    Comprehensive Protocol Support Free and Open-Source Cross-Platform Compatibility Rich Feature Set

    Open Source

    /wireshark-alternatives
  9. Cookie-Editor is a browser extension that manages website cookies.

    Key Cookie-Editor features:

    User-Friendly Interface Comprehensive Cookie Management Cross-Browser Compatibility Free Access

    Open Source

    /cookie-editor-alternatives
  10. The best place to backorder/drop purchase expiring ccTLD domain names.

    Key Replay.io features:

    Ease of Use Debugging Capabilities Collaboration Cross-Browser Support

    Open Source

    /replay-io-alternatives
  11. Graphical frontend to cookiecutter, which comes with an easily searchable list of templates, and simplifies unpacking with a compact placeholder form.

    /cookiedough-alternatives
  12. Saw a bug? Send an instant replay to engineers. It will come with console logs and everything. Developers will โค๏ธ you.

    Key Bird Eats Bug features:

    Ease of Use Comprehensive Bug Reports Time-Saving Integration Capabilities

    /bird-eats-bug-alternatives
  13. Removes all cookie warnings. Light and open-source.

    Key Cookie Fucker features:

    Improved Privacy User Control Reduced Interruptions Open Source

    /cookie-fucker-alternatives
  14. Open-source Chrome, Firefox, and Edge extension to modify HTTP request and response headers, cookies, and local profiles for API debugging.

    Key Header Override features:

    Useful for Development Testing CORS Testing Made Easy No Server Changes Required Security Header Testing

    /header-override-alternatives
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