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Dev tools · alternatives · 2026

24 alternatives to Mockoon

Mock servers in seconds

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mockoon launched in 2017; newer entries below may have overtaken it.

  1. 1

    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 →

  2. 2

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

    2019 · httptoolkit.tech · its alternatives →

  3. 3MO
  4. 4

    Effortless mock APIs for seamless testing & prototyping

    2024 · its alternatives →

  5. 5

    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…

    Aug 2026 · getmocktail.com · its alternatives →

  6. 6

    A HTTP-based API simulator to assist parallel development 🛠️

    2018 · mocklets.com · its alternatives →

  7. 7

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

    Feb 2026 · mockapi.dog · its alternatives →

  8. 8
    Mockaroo▲354

    A realistic data generator to test your app

    2015 · mockaroo.com · its alternatives →

  9. 9

    A rapid prototyping, design collaboration and handoff tool

    2018 · its alternatives →

  10. 10

    The fastest and easiest way to mock any API

    2024 · its alternatives →

  11. 11

    Mock your entire API in minutes.

    2019 · mockadillo.com · its alternatives →

  12. 12MS
  13. 13
    Mockable▲114

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

    2015 · its alternatives →

  14. 14

    Mock blocked APIs, passthrough ready routes, see live source

    Mar 2026 · mockphine.com · its alternatives →

  15. 15

    Api management and testing platform for remote teams.

    2020 · mocklets.com · its alternatives →

  16. 16
    Mockden▲12

    Rapid api prototyping & mock data

    2025 · its alternatives →

  17. 17

    mock-server cross-platform api-mock

    2018 · github.com · its alternatives →

  18. 18

    Mock as a service

    2025 · its alternatives →

  19. 19

    Stateless API mocks in seconds, powered by tokens.

    2025 · apifastmock.com · its alternatives →

  20. 20

    Instant Mock APIs from OpenAPI Specs

    Mar 2026 · mockline.xyz · its alternatives →

  21. 21

    Powerful friendly WebRTC mock peer & proxy. Contribute to httptoolkit/mockrtc development by creating an account on GitHub.

    2022 · github.com · its alternatives →

  22. 22

    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 →

  23. 23
    Pollux▲82

    Fake json data & json server mock API generator with JWT

    2021 · mohammedal-rowad.github.io · its alternatives →

  24. 24

    Powerful friendly IPFS mock node & proxy. Contribute to httptoolkit/mockipfs development by creating an account on GitHub.

    2022 · github.com · its alternatives →

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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 →