Dev tools · alternatives · 2026

24 alternatives to Mocky.io

Mock your HTTP responses to test your REST API

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mocky.io launched in 2016; newer entries below may have overtaken it.

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

   Beautiful, cross-platform & open-source tools for debugging, testing and building with HTTP(S), on Windows, Linux & Mac.

   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. 3MS
   Mocktastic – Simple, Offline mock REST APIs for your entire team▲43

   2018 · mocktastic.com · its alternatives →

4. 4
   Mock API Generator▲555

   Generate custom data & API to build apps in less than 30s

   2021 · retool.com · its alternatives →

5. 5
   API Tester▲209

   The easiest way to test APIs

   2017 · its alternatives →

6. 6
   Mockable▲114

   For rapid API prototyping: create REST/SOAP mocks in 3 sec

   2015 · its alternatives →

7. 7
   Reffresh▲91

   Simple, no code, mock APIs

   2024 · reffresh.com · its alternatives →

8. 8
   Mockaroo▲354

   A realistic data generator to test your app

   2015 · mockaroo.com · its alternatives →

9. 9
   Mocklets▲82

   A HTTP-based API simulator to assist parallel development 🛠️

   2018 · mocklets.com · its alternatives →

10. 10
    Mock Maker▲93

    Effortless mock APIs for seamless testing & prototyping

    2024 · its alternatives →

11. 11
    MockAPI Dog▲122

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

    Feb 2026 · mockapi.dog · its alternatives →

12. 12
    Mock API Generator▲17

    API Mocks Prototyping

    2020 · mock-api-builder.vercel.app · its alternatives →

13. 13
    Atmo▲128

    Mock data for your prototypes and demos

    2017 · getatmo.com · its alternatives →

14. 14
    Mockoon – mock REST APIs in seconds▲68

    Mockoon is the easiest and quickest way to run mock REST API servers. No remote deployment, no account required, free, open source and cross-platform.

    2017 · mockoon.com · its alternatives →

15. 15
    Decoy▲99

    Decoy lets developers create mock services locally on macOS. Test webhooks, API wrappers, scrapers and more. No Docker, no Electron, just a beautiful 10 MB native app.

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

16. 16
    HTTPretty, an easy way to mock http requests in python▲97

    Bid on the RGP-Domain falcao.it. Bid now from €10 and secure the domain at an early stage!

    2012 · falcao.it · its alternatives →

17. 17
    Mock Studio▲3

    Hi HN, I built this after using Requestly, Mokku, Mockiato, Tweak, and Mockoon. Each one either paywalled the features I actually needed, required a separate server running on my machine, or just didn't fit the way I work. The browser is already open. DevTools is already open. I wanted the mocking to live there too, not in a separate app I have to remember to start. So roughly a month ago, I started building my own tools. It intercepts network requests at the browser level and lets you swap the response, status code, headers, body without touching your code or spinning up anything.…

    Feb 2026 · mockstudio.app · its alternatives →

18. 18
    Mockhub▲2

    Mockhub allows you to create HTTP mocks.

    2018 · mockhub.io · its alternatives →

19. 19
    MockTower▲6

    Mock APIs, for better parallel development and testing

    2018 · goo.gl · its alternatives →

20. 20
    Mockingjay – Fake servers and consumer-driven contracts▲39

    Fake server, Consumer Driven Contracts and help with testing performance from one configuration file with zero system dependencies and no coding whatsoever - quii/mockingjay-server

    2015 · github.com · its alternatives →

21. 21CM
    Creating mock data using TypeScript interfaces▲57

    2023 · butlermock.online · its alternatives →

22. 22
    Mock-API▲5

    Simplifying API Mocking for Seamless Development Experiences

    2024 · mock-api.net · its alternatives →

23. 23
    Mocky ▲101

    A window into your team's Dropbox activity and projects

    2016 · mocky.com · its alternatives →

24. 24
    AI-Powered Mock API Generator▲86

    Generate customized, realistic mock data & APIs, via GPT

    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 →