Dev tools · alternatives · 2026

24 alternatives to Mock Server

Swagger to Mock Backend Instantly. Build Faster with AI.

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
   MockAPI Dog▲122

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

   Feb 2026 · mockapi.dog · 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 This fragmented approach leads to outdated API specs and chaotic collaboration.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. 4
   Mocknica - AI-Powered Mock API Server▲8

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

   Dec 2025 · mocknica.dev · its alternatives →

5. 5
   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 →

6. 6
   Mockable▲114

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

   2015 · its alternatives →

7. 7
   MockThis▲80

   Generate mock data using AI

   2023 · its alternatives →

8. 8
   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 →

9. 9
   Mockoon▲89

   Mock servers in seconds

   2017 · mockoon.com · its alternatives →

10. 10
    Prism▲79

    Accelerate API development with realistic mock servers

    2023 · stoplight.io · its alternatives →

11. 11
    Visual Swagger Editor for Teams▲89

    Link your app design to API calls

    2022 · its alternatives →

12. 12
    A faster way to prototype your APIs using OpenAPI 3 and Swagger UI▲77

    A generator for OpenAPI 3. Contribute to egorsmkv/openapi3-generator development by creating an account on GitHub.

    2020 · github.com · its alternatives →

13. 13
    Decoy▲99

    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.

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

14. 14
    Mockadillo▲115

    Mock your entire API in minutes.

    2019 · mockadillo.com · its alternatives →

15. 15
    Mock API Generator▲17

    API Mocks Prototyping

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

16. 16
    Mock Maker▲93

    Effortless mock APIs for seamless testing & prototyping

    2024 · its alternatives →

17. 17
    AI-Powered Mock API Generator▲86

    Generate customized, realistic mock data & APIs, via GPT

    2023 · its alternatives →

18. 18
    Loremapis.com▲8

    Get mock APIs from your schema

    2025 · its alternatives →

19. 19
    miniBackend▲6

    Create GET, POST, DELETE and PUT REST APIs with a few clicks

    2019 · minibackend.com · its alternatives →

20. 20
    MockCraft▲2

    Turn real API calls into smart mock endpoints

    Apr 2026 · mock-craft.com · its alternatives →

21. 21
    TestMagic▲53

    AI-powered API test automation. Save 90% of testing time

    2025 · irual.me · its alternatives →

22. 22
    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 →

23. 23
    Symulate▲8

    Build complete UIs before your backend exists

    Nov 2025 · symulate.dev · its alternatives →

24. 24
    DoppelAPI▲2

    The digital twin of your be instant mock server from API

    Feb 2026 · github.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 →