Alternatives

Products that do what Interceptor – mock AJAX requests at the browser level does

1. 1HM
   HTTP Mock – Intercept, debug and mock HTTP(S) with zero setup▲341

   2019 · httptoolkit.tech

2. 2MO
   Mockit – Open-source app to create and configure HTTP mocked endpoints▲158

   2019 · mockit.netlify.com

3. 3HA
   HTTPretty, an easy way to mock http requests in python▲97

   2012 · falcao.it

4. 4AL
   A library to record and intercept JavaScript at runtime▲118

   2017 · maierfelix.github.io

5. 5MM
   Mockoon – mock REST APIs in seconds▲68

   2017 · mockoon.com

6. 6QA
   QEDServer: A standalone playground for JS and AJAX▲22

   2011 · qedserver.napcs.com

7. 7WA
   Web App for generating mocked data from an OpenAPI specification▲19

   2020 · github.com

8. 8JH
   JSONator – HTTP endpoints for mock data▲7

   2014 · jsonator.herokuapp.com

9. 9MJ
   MMOsteroids: JS, Go, and Webrtc▲86

   2017 · emergencevector.com

10. 10HJ
    http.js, a tiny AJAX utility▲15

    2014 · github.com

11. 11SB
    Stubby – better client side mocking of HTTP Requests▲5

    2015 · gocardless.com

12. 12HW
    HTTPiper – Web tool to create mock HTTP dynamic endpoints▲5

    2021 · httpiper.com

13. 13MM
    Mocksup, my mockup prototyping & review webapp▲95

    2010 · mocksup.com

14. 14NJ
    Nothing.js – A chainable mock object which always returns itself▲89

    2018 · github.com

15. 15DA
    Decoy – A native Mac app for mocking HTTP endpoints locally▲7

    Feb 2026 · decoy-app.com

16. 16OA
    Osapy - an API proxy to visualize HTTP request for debugging▲34

    2020 · osapy.com

17. 17JF
    JSFiddle for HTTP requests▲10

    2017 · rest.secapps.com

18. 18MF
    Mockingjay – Fake servers and consumer-driven contracts▲39

    2015 · github.com

19. 19XA
    Xr – A modern ES6 Promise-based XMLHttpRequest wrapper▲32

    2015 · github.com

20. 20PO
    Proxy Orbit – Rotating Web Proxy API for Pentesting▲12

    2019 · proxyorbit.com

21. 21MA
    MockTheClock – A tiny JavaScript library for spoofing time in browser▲18

    2015 · github.com

22. 22FC
    Fakettp – Command line http debugging proxy▲8

    2015 · github.com

23. 23AF
    A free, open-source, collaborative, mock API▲5

    2021 · mockachino.com

24. 24AA
    APIMock – API Mock server with domain support and proxy to record mocks▲6

    2020 · github.com

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