# 3D Simulations (mysimulator.uk)

> 1,016+ interactive physics, mathematics, biology and algorithm simulations running entirely in the browser — Three.js / WebGL / Canvas2D, no backend, no install. Bilingual: English (root) and Ukrainian (/uk/).

mysimulator.uk is a free, open-source library of self-contained interactive simulations across 81 scientific categories. Each simulation is a static HTML page with embedded controls; nothing is sent to the server.

## Main sections

- [Homepage (EN)](https://mysimulator.uk/): featured simulations and category grid
- [Homepage (UK)](https://mysimulator.uk/uk/): Ukrainian-language entry point
- [Categories index](https://mysimulator.uk/categories/): all 81 topic categories
- [Sitemap (HTML)](https://mysimulator.uk/sitemap-html/): browseable list of every simulation
- [XML sitemap](https://mysimulator.uk/sitemap_index.xml): full URL index for crawlers

## Featured categories

- [Physics](https://mysimulator.uk/categories/physics/): mechanics, fluids, waves, fields
- [Mathematics](https://mysimulator.uk/categories/math/): geometry, calculus, number theory
- [Algorithms](https://mysimulator.uk/categories/algorithms/): sorting, pathfinding, flocking
- [Chaos](https://mysimulator.uk/categories/chaos/): Lorenz attractor, double pendulum, fractals
- [Space](https://mysimulator.uk/categories/space/): galaxy, N-body gravity, orbits
- [Biology](https://mysimulator.uk/categories/biology/): cells, ecosystems, evolution
- [Chemistry](https://mysimulator.uk/categories/chemistry/): reactions, molecules, acid-base
- [AI / ML](https://mysimulator.uk/categories/ai-ml/): neural networks, learning visualisations
- [Climate](https://mysimulator.uk/categories/climate/): atmospheric and ocean models
- [Math art](https://mysimulator.uk/math-art/): generative geometric art