Dev tools · alternatives · 2026

24 alternatives to MockAPI

Instant API Mocking for Faster Development

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. MockAPI launched in 2024; newer entries below may have overtaken it.

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▲5

   Accelerate Your Development with Realistic Mock APIs

   2024 · mockapi.com · its alternatives →

3. 3
   Mockaroo▲354

   A realistic data generator to test your app

   2015 · mockaroo.com · its alternatives →

4. 4
   MockAPI Dog▲122

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

   Feb 2026 · mockapi.dog · its alternatives →

5. 5
   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 This fragmented approach leads to outdated API specs and chaotic collaboration.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 →

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
   InterimAPI▲68

   Custom API endpoints with realistic fake data in seconds

   2022 · interimapi.com · its alternatives →

9. 9
   Mockable▲114

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

   2015 · its alternatives →

10. 10
    MockThis▲80

    Generate mock data using AI

    2023 · its alternatives →

11. 11
    AI-Powered Mock API Generator▲86

    Generate customized, realistic mock data & APIs, via GPT

    2023 · its alternatives →

12. 12
    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 →

13. 13
    Mock API Generator▲17

    API Mocks Prototyping

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

14. 14
    apiJuice▲223

    Create a hosted API for anything in seconds

    2025 · apijuice.com · its alternatives →

15. 15
    MockAPI▲4

    APIs on the fly

    2021 · mockapi.io · its alternatives →

16. 16
    Postkit 2.0▲129

    Codepen for mock APIs

    2019 · its alternatives →

17. 17MO
    Mockit – Open-source app to create and configure HTTP mocked endpoints▲158

    2019 · mockit.netlify.com · its alternatives →

18. 18
    Fake API for Devs▲8

    Free mock api generator for developers | instant test data

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

19. 19
    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 →

20. 20
    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 · its alternatives →

21. 21
    Mockline▲5

    Instant Mock APIs from OpenAPI Specs

    Mar 2026 · mockline.xyz · its alternatives →

22. 22
    MockAPI

    Generate mock APIs from natural language in seconds

    Apr 2026 · mockapi.run · its alternatives →

23. 23
    Mocklets▲82

    A HTTP-based API simulator to assist parallel development 🛠️

    2018 · mocklets.com · its alternatives →

24. 24
    Mocka▲3

    Instant Mock APIs for Devs, No JSON Required!

    2025 · mocka.ouim.me · 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 →