Simulating 20M Particles in JavaScript

In plain words

This project demonstrates a particle simulation system built in JavaScript using shared array buffers to handle 20 million particles. It allows users to experiment with the interactive simulation and explore how to push performance limits while remaining within the JavaScript ecosystem. The creator developed it over several months as a technical exploration and welcomes suggestions for optimizing or expanding the simulation further.

written from the facts on this page · September 2026

From the sources

The challenge, simulate 1,000,000 particles in plain javascript at 60 fps on a phone using only the cpu. Let’s go.

• 
  particles.js2014 · vincentgarreau.com · ▲113

  A lightweight JavaScript library for creating particles.

• A2
  A 2D Physics Simulator in JavaScript2017 · htmlpreview.github.io · ▲126
• 
  Simple 2D car physics with JavaScript2020 · pakastin.github.io · ▲308
• 
  1 KB JavaScript framework for building front-end applications2017 · github.com · ▲216

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

• 
  288 Analog Clocks Give Digital Time2017 · clocks.80limit.com · ▲117

  JS/ReactJS simulation of A Million Times

• 
  Umbrella JS, a 2.5kb jQuery alternative2018 · umbrellajs.com · ▲132

  :umbrella: Lightweight javascript library for DOM manipulation and events

• 
  SimCity, but with Permits▲905

  A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.

  Life & fun · 1d ago · permit.petercai.com

• IV
  I've been paying for a rural Tanzanian's education for 10 years▲778

  Life & fun · 13d ago · tanzaniaeducationproject.org

• 
  Bigwords.page – Turn any screen into a sign. The URL is the app▲728

  Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.

  Life & fun · 14d ago · bigwords.page

• 
  Guitoro, a virtual guitar you strum with your keyboard▲573

  Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.

  Life & fun · 8d ago · guitoro.com

• 
  See *almost* any carriers phone settings▲432

  Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.

  Life & fun · 12d ago · carrierexplode.com

• 
  The whole Solar System and every tracked satellite, live in the browser▲407

  Life & fun · 22d ago · space.bl2.net

• 
  Sugar Free: Food Scanner▲2,107

  Sugar detox app

  AI · 2024 · apps.apple.com

• 
  Mobbin 2.0▲1,657

  Discover real-world design inspiration

  Work · 2024 · mobbin.com

• 
  folk 3.0▲1,591

  The CRM for companies who care about people

  Dev tools · 2024 · folk.app

• 
  SuperGPT▲1,206

  Use ChatGPT on Google Sheets

  AI · 2024 · superjoin.ai

• 
  I created an After Effects alternative▲1,150

  Many years ago, I made VJ softwares (to mix live visuals in clubs) for unexpected platforms like the Game Boy Advance, the Playstation 2 and the Raspberry Pi. This year, I’m back with a new web-app: Pikimov. Inspired by Photopea (a free Photoshop clone), I created this web-based motion design & video editor as an alternative to After Effects, to fill empty void. It's free, without signup, without cloud uploads (your files stay on your machine), and your projects are not used for AI models training.

  AI · 2024 · pikimov.com

• 
  Motiff▲1,147

  AI powered professional UI design tool

  AI · 2024 · motiff.com