Dev tools · alternatives · 2026

24 alternatives to is.js

Micro check library for programmers

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. is.js launched in 2015; newer entries below may have overtaken it.

1. 1
   microlight.js▲117

   Improves readability of code by highlighting

   2016 · asvd.github.io · its alternatives →

2. 2
   Micron.JS▲214

   A [μ] microInteraction library built with CSS and JavaScript

   2018 · webkul.github.io · its alternatives →

3. 3MF
   My first open source project (micro check library)▲13

   Check types, regexps, presence, time and more...

   2015 · arasatasaygin.github.io · its alternatives →

4. 4
   micro-analytics▲89

   Public analytics as a Node.js microservice 📈

   2017 · github.com · its alternatives →

5. 5
   JavaScript.com▲217

   A free resource for learning and developing in JavaScript

   2015 · javascript.com · its alternatives →

6. 6
   API Tester▲209

   The easiest way to test APIs

   2017 · its alternatives →

7. 7
   JavaScript Quiz▲190

   Check your JS knowledge by having fun.

   2021 · javascriptquiz.com · its alternatives →

8. 8
   JavaScripting▲74

   Ranking of top JavaScript libraries, frameworks, and plugins

   2015 · its alternatives →

9. 9
   Flow▲74

   Static type checker to find errors in JavaScript programs

   2014 · its alternatives →

10. 10
    The State Of JavaScript Survey▲103

    Discover which JavaScript libraries are the most popular

    2016 · stateofjs.com · its alternatives →

11. 11MJ
    MicroEvent.js - js micro event emitter in less than 20lines▲60

    2011 · notes.jetienne.com · its alternatives →

12. 12
    Tiny Stats API▲165

    A simple analytics API

    2017 · its alternatives →

13. 13
    Every Developer▲138

    Evaluate an API before you code

    2016 · everydeveloper.com · its alternatives →

14. 14EC
    ES-Checker, a feature detection library for ECMAScript▲37

    2015 · ruanyf.github.io · its alternatives →

15. 15
    JS++▲6

    JavaScript Classes, Modules, Type Checking

    2016 · onux.com · its alternatives →

16. 16VJ
    validate.js - lightweight JavaScript form validation library▲102

    2011 · rickharrison.github.com · its alternatives →

17. 17
    Node.js Design Patterns▲76

    The most advanced Node.js topics simplified

    2016 · nodejsdesignpatterns.com · its alternatives →

18. 18
    Micronaut Framework▲88

    Build modular easily testable microservice & serverless apps

    2019 · micronaut.io · its alternatives →

19. 19
    Moiva.io▲71

    A better way to evaluate and compare JS libraries

    2021 · its alternatives →

20. 20
    JavaScript Air - 22: The Science of People in Tech▲65

    What you can do to improve your workspace and community

    2016 · javascriptair.com · its alternatives →

21. 21
    Modular JavaScript▲67

    Let's write robust, well-tested, modular JavaScript code.

    2016 · rajabandotind.com · its alternatives →

22. 22
    Umbrella JS▲6

    Tiny and intuitive javascript library

    2016 · umbrellajs.com · its alternatives →

23. 23MA
    Micro – A public API platform (now free during beta)▲25

    2021 · m3o.com · its alternatives →

24. 24
    Micro – A platform for cloud native development in Go▲44

    2021 · 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 →