Alternatives

Products that do what Unimock does

Self-hosted unified API mock server for REST and gRPC

1. 1MO
   Mockit – Open-source app to create and configure HTTP mocked endpoints▲158

   2019 · mockit.netlify.com

2. 2
   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…

   23d ago · getmocktail.com

3. 3HM
   HTTP Mock – Intercept, debug and mock HTTP(S) with zero setup▲341

   2019 · httptoolkit.tech

4. 4AA
   APIMock – API Mock server with domain support and proxy to record mocks▲6

   2020 · github.com

5. 5
   MockAPI Dog▲122

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

   Feb 2026

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

   2018 · mocktastic.com

7. 7
   Mockoon▲89

   Mock servers in seconds

   2017

8. 8MM
   Mockoon – mock REST APIs in seconds▲68

   2017 · mockoon.com

9. 9
   Decoy▲99

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

   Mar 2026

10. 10NJ
    Nothing.js – A chainable mock object which always returns itself▲89

    2018 · github.com

11. 11
    ApiHome▲73

    Home of API testing

    2022

12. 12
    FACK API'S▲1

    first version is already released.

    Jul 2026 · github.com

13. 13TH
    Test HTTP Requests without Mock Server▲29

    2019 · github.com

14. 14
    ScenarioMock▲4

    Stateful Mock API server you can share with a single URL

    Jul 2026 · scenariomock.com

15. 15MA
    MockRTC – a mock peer and MitM proxy library for WebRTC▲30

    2022 · github.com

16. 16
    Mockline▲5

    Instant Mock APIs from OpenAPI Specs

    Mar 2026 · mockline.xyz

17. 17FF
    Fully-featured desktop gRPC/gRPC-Web client▲33

    2022 · github.com

18. 18TA
    The all-in-one fake API▲12

    2024 · fooapi.com

19. 19OM
    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

20. 20
    ProxyHub▲10

    Tunnel, inspect & mock localhost - no backend needed

    Apr 2026 · proxyhub.app

21. 21FA
    FRPC – A Faster, More Flexible RPC Framework▲19

    Today we're announcing frpc-go, an RPC framework that's designed from the ground up to be lightweight, extensible, and extremely performant. In an apples-to-apples comparison fRPC outperforms gRPC by more than 4x, doing more than 2 million RPCs/second on a single node. Check out our docs site at https://frpc.io!

    2022 · loopholelabs.io

22. 22RG
    REST, gRPC, Thrift – One consistent, open test application across APIs▲7

    2023 · github.com

23. 23AN
    API-Now: A Mock API Server Serves JSON, JavaScript File or Faker Data▲5

    2019 · github.com

24. 24IV
    I've built Routify, a global serverless API gateway▲8

    Hello HN, for the past couple of months I've been working on Routify and wanted to share the progress made so far and hopefully get your opinion/feedback on it. Routify is a global serverless API gateway which handles routing, authentication, rate limiting, load balancing, monitoring, transformation etc (with more coming soon). Routify makes it easier to manage and secure public APIs. It's distributed across many regions globally and acts as a proxy between your clients and your services. You can configure it through the interface in a matter of minutes (no code required). There are…

    2024 · routify.to

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