Dev tools · alternatives · 2026

24 alternatives to Buddy.js – Magic number detection for JavaScript

Magic number detection for JavaScript. Contribute to danielstjules/buddy.js development by creating an account on GitHub.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Buddy.js – Magic number detection for JavaScript launched in 2014; newer entries below may have overtaken it.

1. 1
   Get your local and public IP addresses in JavaScript▲239

   Demo: https://diafygi.github.io/webrtc-ips/. Contribute to diafygi/webrtc-ips development by creating an account on GitHub.

   2015 · github.com · its alternatives →

2. 2
   ML5.js▲249

   Friendly machine learning for the web

   2018 · ml5js.org · its alternatives →

3. 3
   TypeScript 6.0▲156

   The Playground lets you write TypeScript or JavaScript online in a safe and sharable way.

   Mar 2026 · typescriptlang.org · its alternatives →

4. 4
   Gmail.js – JavaScript API for Gmail▲212

   Gmail JavaScript API. Contribute to KartikTalwar/gmail.js development by creating an account on GitHub.

   2013 · github.com · its alternatives →

5. 5
   JavaScript PubSub in 163 Bytes▲104

   pubsub in <100 bytes. Contribute to hassanshaikley/pico-pubsub development by creating an account on GitHub.

   2025 · github.com · its alternatives →

6. 6AF
   A Face-Detection Library in 200 Lines of JavaScript▲36

   2018 · tkv.io · its alternatives →

7. 7
   Matches.js -- Powerful Pattern Matching for Javascript▲96

   Powerful pattern matching for Javascript. Contribute to natefaubion/matches.js development by creating an account on GitHub.

   2012 · github.com · its alternatives →

8. 8
   Advanced Mathematics Library for Node.js and JavaScript▲123

   Advanced Mathematics Library for Node.js and JavaScript - numbers/numbers.js

   2012 · github.com · its alternatives →

9. 9
   Simple JavaScript Tetris▲112

   Contribute to jstimpfle/tetris-on-a-plane development by creating an account on GitHub.

   2016 · github.com · its alternatives →

10. 10
    Classes for javascript that you'd actually use▲52

    Classes for javascript that don't suck. Contribute to jneen/pjs development by creating an account on GitHub.

    2012 · github.com · its alternatives →

11. 11EC
    ES-Checker, a feature detection library for ECMAScript▲37

    2015 · ruanyf.github.io · its alternatives →

12. 12AJ
    A Javascript library to overcomplicate Five▲69

    2014 · jackdcrawford.github.io · its alternatives →

13. 13SO
    ScriptObservatory.org – How much malicious JavaScript goes unnoticed?▲38

    2015 · scriptobservatory.org · its alternatives →

14. 14
    Aimless.js – the missing js randomness library▲64

    The missing JavaScript randomness library. Contribute to ChrisCavs/aimless.js development by creating an account on GitHub.

    2023 · github.com · its alternatives →

15. 15
    Guardscript – Detect any changes made to your JavaScript files▲28

    Guardscript monitors every few minutes any changes made to your Javascript files and sends you a notification with the changes made. You can then detect any malicious modification by analyzing these results.

    2019 · guardscript.com · its alternatives →

16. 16BA
    Building a JavaScript Recommendation Engine with Graph Theory▲40

    2015 · medium.com · its alternatives →

17. 17
    JavaScript Parser Combinator example▲5

    Parser Combinators in JavaScript. Contribute to incrediblesound/js-combinators development by creating an account on GitHub.

    2017 · github.com · its alternatives →

18. 18
    I made a rational object for javascript▲13

    Rational numbers for Javascript. Contribute to LarryBattle/Ratio.js development by creating an account on GitHub.

    2012 · github.com · its alternatives →

19. 19
    JavaScript port of Scientist library for refactoring critical paths▲34

    :microscope: A JavaScript interpretation of the Ruby library Scientist, a library for carefully refactoring critical paths. - bugthesystem/scientist.js

    2016 · github.com · its alternatives →

20. 20
    Legalize.js – object validation for node and the browser▲7

    JavaScript object validation for browsers + node. Contribute to paypal/legalize.js development by creating an account on GitHub.

    2015 · github.com · its alternatives →

21. 21AS
    A stab at building my own string diffing library▲29

    Took a stab at building my own string diffing JS package. I built an interactive demo for TypeIt’s website (https:&#x2F;&#x2F;typeitjs.com&#x2F;build-your-own) a while back. The approach I took to handle user input necessitated a way to calculate the difference between the versions of a user’s text input. I searched around for a package to help me out and found a couple of good ones (like fast-diff), but I either didn’t really like their API or didn’t want to take on a huge new dependency. Instead, I thought I’d give it a shot myself (famous last words). I dove into it having no real formal…

    2022 · its alternatives →

22. 22
    Testing Private Functions in JavaScript▲5

    Contribute to arvindrajnaidu/maineffect development by creating an account on GitHub.

    2020 · github.com · its alternatives →

23. 23CJ
    Chunkify.js – A functional API to unblock your JavaScript thread▲29

    2015 · yangmillstheory.github.io · its alternatives →

24. 24
    ThatJSDude▲21

    The easiest and funniest way to understand JavaScript

    2014 · thatjsdude.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 →