AI · alternatives · 2026

24 alternatives to MockAPI Dog

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

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
   Mock API Generator▲555

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

   2021 · retool.com · its alternatives →

2. 2
   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 →

3. 3
   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 This fragmented approach leads to outdated API specs and chaotic collaboration.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 →

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

   2019 · mockit.netlify.com · its alternatives →

5. 5
   Mockable▲114

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

   2015 · its alternatives →

6. 6
   Mock Maker▲93

   Effortless mock APIs for seamless testing & prototyping

   2024 · its alternatives →

7. 7
   Mockadillo▲115

   Mock your entire API in minutes.

   2019 · mockadillo.com · its alternatives →

8. 8
   Mockoon▲89

   Mock servers in seconds

   2017 · mockoon.com · its alternatives →

9. 9
   Mock API Generator▲17

   API Mocks Prototyping

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

10. 10
    AI-Powered Mock API Generator▲86

    Generate customized, realistic mock data & APIs, via GPT

    2023 · its alternatives →

11. 11MS
    Mocktastic – Simple, Offline mock REST APIs for your entire team▲43

    2018 · mocktastic.com · its alternatives →

12. 12
    MockAPI▲4

    Instant API Mocking for Faster Development

    2024 · its alternatives →

13. 13
    Mockline▲5

    Instant Mock APIs from OpenAPI Specs

    Mar 2026 · mockline.xyz · its alternatives →

14. 14
    Mocka▲3

    Instant Mock APIs for Devs, No JSON Required!

    2025 · mocka.ouim.me · its alternatives →

15. 15
    API Fast Mock▲6

    Stateless API mocks in seconds, powered by tokens.

    2025 · apifastmock.com · its alternatives →

16. 16
    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 →

17. 17
    Mocknica - AI-Powered Mock API Server▲8

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

    Dec 2025 · mocknica.dev · its alternatives →

18. 18
    MockREST – Create REST APIs from Your JSON Content▲12

    Mock REST endpoints in seconds. Test without backend delays. Built for developers who need reliable mock data now.

    2017 · mockrest.com · its alternatives →

19. 19
    Fake API for Devs▲8

    Free mock api generator for developers | instant test data

    Nov 2025 · fakeapifordevs.vercel.app · its alternatives →

20. 20
    Mocktastic▲5

    Easy, Offline, REST API Mocking For Your Entire Team

    2019 · mocktastic.com · its alternatives →

21. 21
    FakeURL▲6

    Free online api mocking tool | mock api generator

    2025 · fakeurl.dev · its alternatives →

22. 22
    endpointy.io▲3

    Mock API in just a few seconds

    2024 · its alternatives →

23. 23
    MockWave - Free API mocking tool▲5

    Mockwave

    2025 · mockwave.io · its alternatives →

24. 24
    InterimAPI▲68

    Custom API endpoints with realistic fake data in seconds

    2022 · interimapi.com · 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 →