Dev tools · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Silk – Markdown driven API tests launched in 2016; newer entries below may have overtaken it.

1. 1
   MuM▲93

   A reading-first Markdown engine for macOS

   23d ago · mum.jiker.ai · its alternatives →

2. 2
   Remarkable▲82

   a JavaScript Markdown and Commonmark parser

   2014 · github.com · its alternatives →

3. 3
   Markdoc▲84

   A shared Markdown editor for people and their agents

   14d ago · markdoc.app · its alternatives →

4. 4
   The Changelog - #189: JSON API with Yehuda Katz▲66

   Yehuda's start as a programmer and the spec for building API

   2016 · changelog.com · its alternatives →

5. 5AF
   A free, open-source, collaborative, mock API▲5

   2021 · mockachino.com · its alternatives →

6. 6MA
   Molten, a modern API framework for Python▲7

   2018 · moltenframework.com · its alternatives →

7. 7TT
   Turn the Web into an API – A case study▲8

   2016 · blog.extracty.com · its alternatives →

8. 8WA
   walrus.ai – automated end-to-end tests in one line of code▲7

   2019 · walrus.ai · its alternatives →

9. 9
   Sonar▲14

   A linting tool for the web

   2017 · its alternatives →

10. 10
    Probe API – Utilities for distributed network testing▲8

    2015 · github.com · its alternatives →

11. 11JH
    JSONator – HTTP endpoints for mock data▲7

    2014 · jsonator.herokuapp.com · its alternatives →

12. 12HW
    HTTPiper – Web tool to create mock HTTP dynamic endpoints▲5

    2021 · httpiper.com · its alternatives →

13. 13AB
    Alloy – Boilerplate for building web applications with Go▲7

    2017 · growthmetrics.io · its alternatives →

14. 14SA
    SwitchFeat – An open source feature flags and A/B testing platform▲9

    2023 · switchfeat.com · its alternatives →

15. 15AA
    ANML – A machine-first markup language for the agentic web (IETF Draft)▲7

    May 2026 · anmlfoundation.org · its alternatives →

16. 16TW
    Turn websites into structured APIs▲7

    2015 · kimonolabs.com · its alternatives →

17. 17GA
    Gote – a CLI note-taking management tool for plain Markdown▲6

    Sep 2026 · its alternatives →

18. 18RJ
    Rethinking JavaScript Test Coverage▲8

    2018 · medium.com · its alternatives →

19. 19AI
    AbTest.io a free url shortener with A/B testing features▲7

    2017 · abtest.io · its alternatives →

20. 20CA
    Cuppa – a testing framework for Java 8▲5

    2016 · cuppa.forgerock.org · its alternatives →

21. 21
    Curveball, a microframework in TypeScript with AWS Lambda support▲7

    2020 · evertpot.com · its alternatives →

22. 22
    Basalt – IDE-like documentation for infrastructure and API▲7

    Mar 2026 · basalt-docs.com · its alternatives →

23. 23
    A decorator based testing framework for TypeScript▲6

    2021 · github.com · its alternatives →

24. 24WT
    WunderHub – The Package Manager for APIs▲5

    2022 · hub.wundergraph.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 →