Dev tools · alternatives · 2026

24 alternatives to HttpModifier

Modify HTTP Headers On-The-Fly

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. HttpModifier launched in 2019; newer entries below may have overtaken it.

1. 1
   Requestly▲148

   Debug & Modify HTTP(s) Requests - loved by 125K+ web devs

   2019 · requestly.com · its alternatives →

2. 2
   QuickHeader▲3

   Modify HTTP headers. Right from your toolbar.

   Jul 2026 · chromewebstore.google.com · its alternatives →

3. 3
   Modbox▲3

   Modify HTTP headers, block & redirect requests

   2024 · its alternatives →

4. 4
   Sitemod.io Chrome Extension▲98

   Modify any website in real-time, save your mod and share it.

   2017 · sitemod.io · its alternatives →

5. 5
   Requestly 2.0▲112

   Intercept & modify HTTP requests

   2021 · requestly.com · its alternatives →

6. 6
   ModHeader▲5

   Browser extension to modify request and response headers

   2019 · its alternatives →

7. 7PM
   Proxyman – Modify HTTP Request/Response by JavaScript Code with Ease▲6

   How to use the Scripting tool to modify the Request/Response by Javascript Code.

   2020 · docs.proxyman.io · its alternatives →

8. 8
   chrome extension of modify http headers▲1

   chrome extension,modify http headers

   2023 · chromewebstore.google.com · its alternatives →

9. 9
   Sitemod▲155

   Modify any website in real-time. Share it with the world.

   2017 · sitemod.io · its alternatives →

10. 10
    Middleman▲136

    Intercept and modify and HTTP(S) request and response easily

    2024 · its alternatives →

11. 11
    Browser Use Skills▲230

    Turn any website into a reliable API with 1 prompt

    Dec 2025 · skills.browser-use.com · its alternatives →

12. 12
    Editmode▲159

    Make any website editable inline

    2020 · its alternatives →

13. 13
    httpbin(1)▲105

    HTTP request and response service

    2014 · httpbin.org · its alternatives →

14. 14
    RequestBin▲117

    Inspect HTTP requests in a human-friendly way

    2015 · pipedream.com · its alternatives →

15. 15
    Where Adblock+ injects 20K CSS rules, HTTPSB injects one▲221

    Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc. - Adblock Plus memory consumption · gorhill/httpswitchboard Wiki

    2014 · github.com · its alternatives →

16. 16
    HTTP Prompt▲128

    An interactive command-line HTTP client

    2016 · github.com · its alternatives →

17. 17
    API Diff▲161

    Diff two API versions in seconds and see what has changed

    2022 · api-diff.io · its alternatives →

18. 18
    Header Override▲3

    Browser extension to modify headers and cookies

    Jul 2026 · headeroverride.com · its alternatives →

19. 19
    Alter URL▲93

    Your link, your rules

    2024 · alterurl.com · its alternatives →

20. 20
    Routepath▲108

    Simple HTTPS, routing, and custom domains for your sites

    2020 · its alternatives →

21. 21
    Script-httpd – Turn command line scripts into web services▲24

    Turn shell commands into web services. Contribute to beefsack/webify development by creating an account on GitHub.

    2020 · github.com · its alternatives →

22. 22
    HTTP Status Tester▲81

    Test URLs in bulk for their HTTP responses, by ex-Google

    2022 · http.app · its alternatives →

23. 23
    HTTPie for Terminal 2.6.0▲119

    Making APIs simple and intuitive for makers around the world

    2021 · httpie.io · its alternatives →

24. 24
    TOMODO▲79

    Create new websites by modifying existing ones

    2014 · tomodo.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →