Calculators, converters, generators, games and more. Top 20 per category, sorted by most popular. Everything runs in your browser.
Create stunning map art of any city
Turn text into beautiful word art
Generate harmonious color schemes
Draw flowcharts with Mermaid syntax
Visualize flows and proportions
Generate sky charts for any date & place
Zoom into infinite Mandelbrot & Julia sets
Create mesmerizing geometric patterns
Fireworks, galaxy, rain & fire effects
Interactive Navier-Stokes fluid dynamics
Interactive world globe with data layers
Sketch, draw and diagram freely