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Dev tools · alternatives · 2026

24 alternatives to Mocklets

A HTTP-based API simulator to assist parallel development 🛠️

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mocklets launched in 2018; newer entries below may have overtaken it.

  1. 1

    Api management and testing platform for remote teams.

    2020 · mocklets.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. 3

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

    2021 · retool.com · its alternatives →

  4. 4MO
  5. 5

    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 →

  6. 6
    Mockoon▲89

    Mock servers in seconds

    2017 · mockoon.com · its alternatives →

  7. 7

    Effortless mock APIs for seamless testing & prototyping

    2024 · its alternatives →

  8. 8
    Apidog▲570

    Development teams often struggle with using multiple tools like Postman and Swagger for API design, development, and testing. This fragmented approach leads to outdated API specs and chaotic collaboration. So we built Apidog: a single, unified API platform for team collaboration. It has a beautiful interface that makes it easy to create API spec, generate request data from API spec, validate responses, create mock data, orchestrate test scenarios, and publish API documentation. Apidog = Postman + Swagger + Mock + JMeter.

    2024 · apidog.com · its alternatives →

  9. 9
    Flowlet▲275

    A low-code platform for connecting and providing APIs

    2022 · flowlet.app · its alternatives →

  10. 10

    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 →

  11. 11

    Simple, no code, mock APIs

    2024 · reffresh.com · its alternatives →

  12. 12MM
  13. 13
    Pollux▲82

    Fake json data & json server mock API generator with JWT

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

  14. 14

    Simplifying API Mocking for Seamless Development Experiences

    2024 · mock-api.net · its alternatives →

  15. 15

    API Mocks Prototyping

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

  16. 16MS
  17. 17

    Generate mock data using AI

    2023 · its alternatives →

  18. 18

    A rapid prototyping, design collaboration and handoff tool

    2018 · its alternatives →

  19. 19

    Generate customized, realistic mock data & APIs, via GPT

    2023 · its alternatives →

  20. 20

    Fast and collaborative online prototyping platform

    2021 · its alternatives →

  21. 21

    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 →

  22. 22

    Mock APIs, for better parallel development and testing

    2018 · goo.gl · its alternatives →

  23. 23

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

    2022 · github.com · its alternatives →

  24. 24

    Effortless hosted fake REST and GraphQL API for teams/makers

    2023 · mockend.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 →