Life & fun · alternatives · 2026

24 alternatives to Fcal – Extensive math expression evaluator library for JavaScript

Extensive math expression evaluator library for JavaScript and Node.js - 5anthosh/fcal

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Fcal – Extensive math expression evaluator library for JavaScript launched in 2020; newer entries below may have overtaken it.

1. 1
   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 →

2. 2AJ
   Algebra.js – Build, display, and solve algebraic equations▲132

   2015 · algebra.js.org · its alternatives →

3. 3AJ
   A Javascript library to overcomplicate Five▲69

   2014 · jackdcrawford.github.io · its alternatives →

4. 4
   Data Structures and Algorithms in JavaScript▲369

   🥞Data Structures and Algorithms explained and implemented in JavaScript + eBook - amejiarosario/dsa.js-data-structures-algorithms-javascript

   2019 · github.com · its alternatives →

5. 5
   1 KB JavaScript library for building front end apps▲242

   1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

   2017 · github.com · its alternatives →

6. 6
   Regex library▲276

   A curated list of most commonly used regular expressions

   2022 · uibakery.io · its alternatives →

7. 7
   Fcal▲4

   Open source cross platform calculator for programmers

   2020 · github.com · its alternatives →

8. 8
   Umbrella JS, a 2.5kb jQuery alternative▲132

   :umbrella: Lightweight javascript library for DOM manipulation and events

   2018 · umbrellajs.com · its alternatives →

9. 9
   1kb JavaScript library for building front end applications▲187

   1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

   2017 · github.com · its alternatives →

10. 10
    NotebookJS▲109

    Scientific computation for JavaScript

    2016 · datazar.com · its alternatives →

11. 11AL
    A library to record and intercept JavaScript at runtime▲118

    2017 · maierfelix.github.io · its alternatives →

12. 12
    Duktape-eval – a eval library built on Duktape and WebAssembly▲41

    A safe eval library based on WebAssembly and Duktape/QuickJS. - maple3142/wasm-jseval

    2020 · github.com · its alternatives →

13. 13
    Ferrum.js – Rust features in JS: traits and advanced iteration▲63

    Features from the rust language in javascript: Provides Traits/Type classes & a hashing infrastructure and an advanced library for working with sequences/iterators in js - adobe/ferrum

    2019 · github.com · its alternatives →

14. 14VJ
    validate.js - lightweight JavaScript form validation library▲102

    2011 · rickharrison.github.com · its alternatives →

15. 15
    Total.js Platform▲93

    Open-source JavaScript platform

    2021 · totaljs.com · its alternatives →

16. 16
    Moiva.io▲71

    A better way to evaluate and compare JS libraries

    2021 · its alternatives →

17. 17
    Weird JSON superset with BigInt, Infinity, TypedArray etc▲67

    the JS/Node.JS library for encoding complex and unconventional data structures. Support for BigInts, TypedArrays, null, undefined, and Symbol. Multiple flavors available. - DO-SAY-GO/WeirdJSON

    2020 · github.com · its alternatives →

18. 18
    An experimental data-flow analysis tool for JavaScript▲95

    Find the origin of any character in the DOM

    2019 · fromjs.com · its alternatives →

19. 19
    Jax-JS, array library in JavaScript targeting WebGPU▲84

    JAX in pure JavaScript, as a flexible machine learning library and compiler.

    Jan 2026 · ss.ekzhang.com · its alternatives →

20. 20
    6to5 – Turn ES6 code into vanilla ES5 with source maps and no runtime▲48

    🐠 Babel is a compiler for writing next generation JavaScript. - babel/babel

    2014 · github.com · its alternatives →

21. 21
    libRmath.js – A port of R's Nmath numeric library to JavaScript▲80

    This R statistical nmath module re-created in typescript/javascript and handwritten webassembly. - R-js/libRmath.js

    2018 · github.com · its alternatives →

22. 22
    Moon – 3kb JavaScript UI compiler▲71

    The purely functional user interface library that

    2018 · kbrsh.github.io · its alternatives →

23. 23
    Combinatorics.js – Combinatorics JavaScript Library▲25

    2015 · github.com · its alternatives →

24. 24
    a small jQuery Form Validation library▲47

    Got bored of using other ones, so made my own. Contribute to jackfranklin/jQuery-Form-Validator development by creating an account on GitHub.

    2012 · 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 →