Interactive tools
Free interactive tools you can try instantly in your browser. No signup, no install.
12 tools · sorted by community upvotes · browse all

Buy vs Rent
Move one slider and the math tells you when buying beats renting.

Floor796
A pixel art scene that never stops growing. You can zoom in forever.

Cat Bounce
Bouncing cats. That's it. Click to add more cats. Drag them around. Simple, pure, internet joy.

Incredibox
FreemiumCreate catchy music by dragging beatbox sounds onto animated characters. Layer beats, effects, melodies, and choruses. Impossibly fun music creation.

Neal.fun
Collection of interactive web experiments — spend Bill Gates' money, explore the size of space, draw a perfect circle, and more. Pure creative joy.

Chrome Music Lab
Google's collection of interactive music experiments. Make songs with shapes, visualize harmonics, play with rhythm — perfect for learning music fundamentals.

Department of Transformation
A beautifully designed experimental website that plays with web conventions and digital interaction. Part portfolio, part art piece.

The Pudding
Visual essays that explain ideas with data visualizations and interactive graphics. Topics range from pop music to politics to pockets in women's clothing.

The Evolution of Trust
Nicky Case's brilliant interactive guide to game theory. Play through the Prisoner's Dilemma and discover why trust and cooperation evolve — or collapse.

Differential Geometry Explorer
Garrett Lisi's interactive visualization of matter's intrinsic degrees of freedom. Spin beautiful geometric structures that represent fundamental physics.

