Life & fun · 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. Molecular Dynamics in the Browser launched in 2021; newer entries below may have overtaken it.

1. 1
   NotebookJS▲109

   Scientific computation for JavaScript

   2016 · datazar.com · its alternatives →

2. 2
   Type Sample▲105

   A tool for identifying and sampling webfonts

   2014 · typewolf.com · its alternatives →

3. 3
   Dots UI▲96

   A React library for morphable particle interfaces

   18d ago · dotsui.dev · its alternatives →

4. 4
   Polymer▲65

   Building blocks for the web

   2014 · polymer-library.polymer-project.org · its alternatives →

5. 5
   matter.js▲3

   A 2D physics engine for the web

   2016 · brm.io · its alternatives →

6. 6
   for / with / in▲54

   Experiments and conversations about design in the browser

   2015 · htmloutput.risd.gd · its alternatives →

7. 7
   Chemozart▲5

   Web-based 3D molecule editor and visualizer platform

   2016 · github.com · its alternatives →

8. 8
   Matt's DOM Utils—a modular HTML DOM library with wide browser support▲6

   2012 · fortybelow.ca · its alternatives →

9. 9
   Dynamics JS▲7

   Javascript library to create physics-based CSS animations

   2015 · dynamicsjs.com · its alternatives →

10. 10TW
    The Wavefiz – Visualize the Schrödinger Equation in WebGL▲9

    Web-based quantum physics visualizer for wavefunctions and the Schrödinger Equation

    2016 · ridiculousfish.com · its alternatives →

11. 11AJ
    Ayr.js – a reactivity model designed for simplicity▲9

    2024 · npmjs.com · its alternatives →

12. 12DS
    Dovetail, Spectral Subtraction Mixing in the Browser▲6

    2019 · dsp.audio · its alternatives →

13. 13BE
    Blabr – Embedding scientific computation in your site▲6

    2015 · blabr.org · its alternatives →

14. 14
    Sonar▲14

    A linting tool for the web

    2017 · its alternatives →

15. 15
    Windsock.js – A flux inspired library for building web applications▲6

    2016 · github.com · its alternatives →

16. 16SE
    SciZone – Embed scientific datasets and phenomena on the web▲6

    2015 · sci.zone · its alternatives →

17. 17CA
    Customizable Animated Atomic Bohr Model▲5

    2016 · acollectionofatoms.github.io · its alternatives →

18. 18W1
    WebGL 1M particles▲8

    2017 · img42.com · its alternatives →

19. 19SR
    Space Rock, a realtime JavaScript framework▲7

    2015 · space-rock.meteor.com · its alternatives →

20. 20
    Monkberry▲6

    A JavaScript library for building web user interfaces

    2016 · monkberry.js.org · its alternatives →

21. 21AL
    A Living Neural Web in HTML5 Canvas▲7

    Jun 2026 · techoreon.github.io · its alternatives →

22. 22SA
    Sitestencil, a new way of building websites with flexbox and gutters▲9

    2016 · sitestencil.com · its alternatives →

23. 23OA
    Obelix, a simple and extensible static site generator▲8

    2020 · obelix-site-builder.github.io · its alternatives →

24. 249C
    999.css, a barebones CSS framework in 999 bytes (Not gzipped)▲7

    2016 · 999.surge.sh · 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 →