Life & fun · alternatives · 2026

A 2D Physics Simulator in JavaScript is a web-based physics simulation tool that runs in the browser. It allows users to create and observe two-dimensional physics interactions and behaviors through an interactive HTML… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. A 2D Physics Simulator in JavaScript launched in 2017; newer entries below may have overtaken it.

1. 1
   Simple 2D car physics with JavaScript▲308

   2020 · pakastin.github.io · its alternatives →

2. 2
   Simulating 20M Particles in JavaScript▲561

   Had some fun with shared array buffers over many months of free time. Skip to the end to play around with the final app. Open to ideas on how to simulate more whilst staying in js land.

   2024 · dgerrells.com · its alternatives →

3. 3
   Physics▲7

   Pure JavaScript physics simulation

   2020 · theabbie.github.io · its alternatives →

4. 4
   Dyna-Kinematics – A 2D physics simulator with some unique features▲78

   A 2D rigid-body dynamics simulator with some cool features for generating beautiful animations. - diegomacario/Dyna-Kinematics

   2020 · github.com · its alternatives →

5. 5OS
   Open source balloon simulation with Three.js▲307

   2019 · alexanderperrin.com.au · its alternatives →

6. 6
   Pts.js – A library for visualization and creative coding▲611

   Pts is a javascript library for visualization and creative-coding.

   2018 · ptsjs.org · its alternatives →

7. 7
   BepuPhysics – 3D real-time physics simulation library in C#▲108

   Pure C# 3D real time physics simulation library, now with a higher version number. - bepu/bepuphysics2

   2019 · github.com · its alternatives →

8. 8
   2D Coulomb Gas Simulator▲44

   A pretty simple but fun to play with simulator for a concept from mathematical physics called the "2D Coulomb gas". I originally made this for my Bachelor's thesis to create pretty pictures and build intuition but have recently gotten it a fresh coat of paint and better performance curtesy of WebGPU acceleration (ported with liberal help from Codex to get through all of the boilerplate). Play around with it - hopefully read up more on the 2D Coulomb gas because it is an incredibly deep topic research wise.

   Feb 2026 · simonhalvdansson.github.io · its alternatives →

9. 9
   Simulation-based high school physics course notes▲295

   Interactive notes for algebra based physics with explorable explanations

   2020 · landgreen.github.io · its alternatives →

10. 10
    Simple 2D Physics Engine in JavaScript▲5

    A simple 2D physics engine written to learn more about JavaScript - rzscheck/physics-js

    2020 · github.com · its alternatives →

11. 11
    A fast 2D physics engine▲14

    A very fast and scalable physics engine, based on Box2D. - mtsamis/box2d-optimized

    2020 · github.com · its alternatives →

12. 12VJ
    Velocity.js – Accelerated JavaScript animation▲160

    Velocity.js: An incredibly fast animation engine for motion designers.

    2014 · velocityjs.org · its alternatives →

13. 13
    Advanced Physics Library designed for Javascript and Node.JS▲18

    Advanced Physics Library designed for Javascript and Node.JS - AbhiAgarwal/phys.js

    2013 · github.com · its alternatives →

14. 14
    WebGL-Based Cloth Simulation▲42

    A prototype implementation of cloth simulation. It uses the soft body dynamics support in ammo.js.

    2020 · playcanv.as · its alternatives →

15. 15
    SimPhy▲83

    Physics and math simulator for teachers and students

    2021 · simphy.com · its alternatives →

16. 16
    WhitestormJS▲89

    🚀 3D Framework for developing web apps with physics.

    2016 · its alternatives →

17. 17IB
    I built a gravity simulator in pure CSS▲64

    2022 · multiplanetary.website · its alternatives →

18. 18
    Chart.js 2.0▲440

    Simple, clean & engaging charts for designers & developers.

    2016 · chartjs.org · its alternatives →

19. 19
    Interactive physics simulations I built while teaching my daughter▲87

    I started teaching my daughter physics by showing her how things actually work - plucking guitar strings to explain vibration, mixing paints to understand light, dropping objects to see gravity in action. She learned so much faster through hands-on exploration than through books or videos. That's when I realized: what if I could recreate these physical experiments as interactive simulations? Lumen is the result - an interactive physics playground covering sound, light, motion, life, and mechanics. Each module lets you manipulate variables in real-time and see/hear the results…

    Jan 2026 · projectlumen.app · its alternatives →

20. 20RT
    Real-Time 3D Gaussian Splatting in WebGL▲309

    2023 · antimatter15.com · its alternatives →

21. 21JL
    jsdares – learning programming visually▲177

    Experimental educational programming environment. Learn Javascript and create your own dares!

    2013 · jsdares.com · its alternatives →

22. 22J2
    JavaScript 2D/3D Verlet physics module▲8

    2014 · npmjs.org · its alternatives →

23. 23EW
    Exophysics – WebGL2 particle simulator▲80

    2020 · exophysics.net · its alternatives →

24. 24WJ
    Wiv.js – A library for a more wiggly div▲265

    2018 · jjkaufman.github.io · 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 →