Alternatives

Products that do what MockBolt does

Instant mock APIs from JSON. Free, anonymous, no signup.

1. 1
   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

2. 2
   Mock API Generator▲548

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

   2021

3. 3
   Mockoon▲89

   Mock servers in seconds

   2017

4. 4
   MockAPI Dog▲122

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

   Feb 2026

5. 5
   API_TESTER▲249

   Test your APIs right from the macOS menu bar

   2025

6. 6
   JSON url▲119

   Mock backend with JSON generated from URL

   2022

7. 7
   Mockphine▲87

   Mock blocked APIs, passthrough ready routes, see live source

   Mar 2026

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

   2017 · mockoon.com

9. 9
   Mockadillo▲115

   Mock your entire API in minutes.

   2019

10. 10
    Mock Maker▲93

    Effortless mock APIs for seamless testing & prototyping

    2024

11. 11
    Postkit 2.0▲129

    Codepen for mock APIs

    2019

12. 12MO
    Mockit – Open-source app to create and configure HTTP mocked endpoints▲158

    2019 · mockit.netlify.com

13. 13
    Decoy▲99

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

    Mar 2026

14. 14
    MockingBot▲82

    A rapid prototyping, design collaboration and handoff tool

    2018

15. 15HM
    HTTP Mock – Intercept, debug and mock HTTP(S) with zero setup▲341

    2019 · httptoolkit.tech

16. 16
    Mocklets▲82

    A HTTP-based API simulator to assist parallel development 🛠️

    2018

17. 17
    MockPilot▲146

    Turn live websites into editable mockups

    Jun 2026 · github.com

18. 18OM
    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

19. 19
    Mockline▲5

    Instant Mock APIs from OpenAPI Specs

    Mar 2026

20. 20GJ
    Generate JSON mock data for testing/initial app development▲103

    2023 · jsongenerator.io

21. 21CM
    Creating mock data using TypeScript interfaces▲57

    2023 · butlermock.online

22. 22
    Mockable▲114

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

    2015

23. 23
    MockCraft▲2

    Turn real API calls into smart mock endpoints

    Apr 2026 · mock-craft.com

24. 24
    MockHub

    Solo dev building MockHub — mock APIs in seconds

    Apr 2026 · mockhub.ovh

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