Dev tools · alternatives · 2026

24 alternatives to Mocksy

Mock API endpoints locally on macOS

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Decoy▲99

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

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

2. 2
   Mockoon▲89

   Mock servers in seconds

   2017 · its alternatives →

3. 3
   API_TESTER▲249

   Test your APIs right from the macOS menu bar

   2025 · apps.apple.com · its alternatives →

4. 4MO
   Mockit – Open-source app to create and configure HTTP mocked endpoints▲158

   2019 · mockit.netlify.com · its alternatives →

5. 5
   Decoy – A native Mac app for mocking HTTP endpoints locally▲7

   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.

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

6. 6
   Mock API Generator▲548

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

   2021 · its alternatives →

7. 7
   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 →

8. 8
   MockAPI Dog▲122

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

   Feb 2026 · mockapi.dog · its alternatives →

9. 9
   MockSMTP▲3

   Smart and simple e-mail testing on Mac OS X

   2016 · its alternatives →

10. 10
    Mock Maker▲93

    Effortless mock APIs for seamless testing & prototyping

    2024 · its alternatives →

11. 11
    Mockable▲114

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

    2015 · its alternatives →

12. 12MS
    Mocktastic – Simple, Offline mock REST APIs for your entire team▲43

    2018 · mocktastic.com · its alternatives →

13. 13
    MockingBot▲82

    A rapid prototyping, design collaboration and handoff tool

    2018 · its alternatives →

14. 14ST
    Simple tool to generate mock APIs for testing▲25

    2024 · endpts.io · its alternatives →

15. 15
    Mockman▲2

    mock-server cross-platform api-mock

    2018 · its alternatives →

16. 16
    Mock API Generator▲17

    API Mocks Prototyping

    2020 · its alternatives →

17. 17
    Pollux▲82

    Fake json data & json server mock API generator with JWT

    2021 · its alternatives →

18. 18MM
    Mockoon – mock REST APIs in seconds▲68

    2017 · mockoon.com · its alternatives →

19. 19
    MockFast.io▲4

    Mock as a service

    2025 · its alternatives →

20. 20
    Mocknica - AI-Powered Mock API Server▲8

    Create mock APIs in seconds with AI. Ship prototypes faster.

    Dec 2025 · mocknica.dev · its alternatives →

21. 21
    apimock-rs▲9

    A developer-friendly, fast and functional HTTP(S) server.

    Nov 2025 · apimokka.github.io · its alternatives →

22. 22
    Mockden▲12

    Rapid api prototyping & mock data

    2025 · its alternatives →

23. 23
    MockMaster▲8

    The fastest and easiest way to mock any API

    2024 · its alternatives →

24. 24
    Mocktastic▲5

    Easy, Offline, REST API Mocking For Your Entire Team

    2019 · 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 →