Dev tools · alternatives · 2026

Mockit is an open-source development tool that lets developers create and configure HTTP mocked endpoints. It's designed for software developers who need to simulate API responses during testing and development without… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mockit – Open-source app to create and configure HTTP mocked endpoints launched in 2019; 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. 2
   MockIt▲3

   Configure and create HTTP mocked endpoints for your apps.

   2019 · mockit.netlify.com · its alternatives →

3. 3
   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 →

4. 4
   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…

   Aug 2026 · getmocktail.com · its alternatives →

5. 5ST
   Simple tool to generate mock APIs for testing▲25

   2024 · endpts.io · its alternatives →

6. 6MS
   Mocktastic – Simple, Offline mock REST APIs for your entire team▲43

   2018 · mocktastic.com · its alternatives →

7. 7
   Mock API Generator▲555

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

   2021 · retool.com · its alternatives →

8. 8MM
   Mocksup, my mockup prototyping & review webapp▲95

   2010 · mocksup.com · its alternatives →

9. 9
   Mock Maker▲93

   Effortless mock APIs for seamless testing & prototyping

   2024 · its alternatives →

10. 10
    Mocklets▲82

    A HTTP-based API simulator to assist parallel development 🛠️

    2018 · mocklets.com · its alternatives →

11. 11
    MockAPI Dog▲122

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

    Feb 2026 · mockapi.dog · its alternatives →

12. 12
    Mockbin▲25

    Generate endpoints to test, mock, and track HTTP requesta

    2015 · its alternatives →

13. 13
    Mockoon▲89

    Mock servers in seconds

    2017 · mockoon.com · its alternatives →

14. 14
    Mocktotype▲149

    A simple tool to display your mockups in a browser

    2015 · its alternatives →

15. 15
    Mockhub▲2

    Mockhub allows you to create HTTP mocks.

    2018 · mockhub.io · its alternatives →

16. 16
    MockingBot▲82

    A rapid prototyping, design collaboration and handoff tool

    2018 · its alternatives →

17. 17
    Prism▲79

    Accelerate API development with realistic mock servers

    2023 · stoplight.io · its alternatives →

18. 18
    MockGPT▲11

    A Mock API for Developing and Testing Generative AI Apps

    2024 · mockgpt-3.fly.dev · its alternatives →

19. 19
    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 →

20. 20
    Web App for generating mocked data from an OpenAPI specification▲19

    Progressive Web App for generating mocked data from an OpenAPI specification - Fredx87/openapi-mock-generator

    2020 · github.com · its alternatives →

21. 21
    OpenAPI mocks that don't suck – realistic test data, quick setup▲13

    Hi HN! I'm Ankit, the founder of Beeceptor, a request mocking and intercepting tool. This time, I built something new to address a pain I’ve personally felt (and heard from dozens of QA, frontend, and platform teams): making OpenAPI specs actually useful during development. API contracts just sit around as docs often. What if you could 'activate' them, instantly have a realistic, hosted mock server-with contract validation, smart test data, and early usage? So I made _Mockaroo for OpenAPI_, but with brains. It spins up a hosted mock server from your spec in one click. It: - Generates…

    2025 · beeceptor.com · its alternatives →

22. 22
    Mock API Generator▲17

    API Mocks Prototyping

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

23. 23
    Mock-API▲5

    Simplifying API Mocking for Seamless Development Experiences

    2024 · mock-api.net · its alternatives →

24. 24
    Mocky.io▲9

    Mock your HTTP responses to test your REST API

    2016 · 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 →