Dev tools · alternatives · 2026

24 alternatives to HTTP Mock

Intercept, debug & mock HTTP(S) with zero setup

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

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

   2019 · httptoolkit.tech · its alternatives →

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

   2019 · mockit.netlify.com · its alternatives →

3. 3IR
   Intercept.rest – Faster API debugging▲89

   Sharing an internal tool that accelerated my development work 10-fold, especially with API debugging. Thought fellow developers here might find it useful. As a developer, I often have trouble reproducing errors at the client end. https://intercept.rest lets me debug and monitor API requests and responses. It is similar to the Network tab in Chrome Developer Tools but works for any API: mobile apps, webhooks, frontend etc. After I shared it with a close circle of friends, they found it incredibly useful and even found new use cases, I never imagined. Been a long time lurker here and…

   2018 · its alternatives →

4. 4
   inProxy▲65

   Free Cross-platform Web Debugging and Mocking tool

   2020 · its alternatives →

5. 5WR
   We’re open-sourcing Requestly - HTTP debugging proxy for Web and Mobile▲54

   Hey HN! We’ve open-sourced Requestly (https://github.com/requestly/requestly) - A network debugging proxy for web & mobile apps. Requestly intercepts all HTTP(s) requests & responses and provides full control to developers to modify the request/response like rewriting request URL to hit different environment or returning different response for APIs/scripts. In addition to HTTP(s) interception & modification capabilities, Requestly also offers Mock Server [0] & recording the browser sessions [1] with video, console logs, & network logs stitched together. We use…

   2023 · github.com · its alternatives →

6. 6
   Mocklets▲82

   A HTTP-based API simulator to assist parallel development 🛠️

   2018 · its alternatives →

7. 7
   Requestly▲148

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

   2019 · its alternatives →

8. 8IM
   Interceptor – mock AJAX requests at the browser level▲60

   2018 · crypt.codemancers.com · its alternatives →

9. 9
   MockAPI Dog▲122

   Instant mock REST & LLM APIs - free, no signup required

   Feb 2026 · mockapi.dog · its alternatives →

10. 10
    Requestly 2.0▲112

    Intercept & modify HTTP requests

    2021 · its alternatives →

11. 11
    Mockphine▲87

    Mock blocked APIs, passthrough ready routes, see live source

    Mar 2026 · mockphine.com · its alternatives →

12. 12
    API Interceptor, Mocker and Tester▲2

    Intercept, modify, mock and test HTTP requests with ease

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

13. 13
    Mockoon▲89

    Mock servers in seconds

    2017 · its alternatives →

14. 14HA
    HTTPretty, an easy way to mock http requests in python▲97

    2012 · falcao.it · its alternatives →

15. 15
    Mocktail – Free, open-source mock API server with a built-in dashboard▲25

    Hi HN, I built the first version of Mocktail years ago. I recently came back to the project, and after a pretty substantial rebuild, v4 is now out. Mocktail is a free and open-source, self-hosted mock API server with a built-in dashboard and database, packaged as a single ~25 MB binary. You can run it locally or on your own infrastructure — no account or hosted service required. You can define endpoints and responses, generate realistic data per request, customize headers, status codes and latency, and inspect incoming requests in real time. With v4, I also added MCP support, so coding…

    28d ago · getmocktail.com · its alternatives →

16. 16
    HTTP View▲126

    Supercharged HTTP(S) debugging, in one click

    2019 · its alternatives →

17. 17
    Decoy▲99

    Local server mocks in macOS, all in a lightweight native app

    Mar 2026 · decoy-app.com · its alternatives →

18. 18TH
    Test HTTP Requests without Mock Server▲29

    2019 · github.com · its alternatives →

19. 19
    JSON url▲119

    Mock backend with JSON generated from URL

    2022 · its alternatives →

20. 20AP
    A proxy service for debugging HTTP/S traffic▲75

    2017 · debugproxy.com · its alternatives →

21. 21
    ezyMock▲81

    Mocking API endpoints has never been easier

    2017 · its alternatives →

22. 22MM
    Mockoon – mock REST APIs in seconds▲68

    2017 · mockoon.com · its alternatives →

23. 23OS
    Open-Source HTTP Interceptor – Capture, Modify, Run Requests in Browser▲5

    Hey HN, I recently built an open-source HTTP interceptor called Relay, which works as a Chrome extension for capturing, modifying, and replaying HTTP requests directly in your browser — no account needed. How it works: Relay lets you capture requests as they happen, modify parameters, headers, or body content, and replay them on the fly. You can customize or debug network requests quickly without needing an external tool or complex setup. Key features: - Simple setup: Install the extension and start a session to capture requests. You can filter by URLs and methods. -Request modification:…

    2024 · chromewebstore.google.com · its alternatives →

24. 24
    Prism▲79

    Accelerate API development with realistic mock servers

    2023 · 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 →