about me
Alexander Kaan
Amsterdam
I design interfaces and build them. Eighteen years in the trade: ten in advertising, the rest making products. Lately open-source UI tooling.
latest
UIcockpit
2026
The open-source design system generator
Theme Tailwind, shadcn/ui, Bootstrap, Material 3, Radix, Mantine, Ant Design, daisyUI and Open Props with one set of values, side by side. Pick your favourite and export your own design system.
UISandbox
2026
Play with your app's design. Right in the browser.
Configure your UI in your browser, or straight from your agent via MCP. Every colour, font, radius and spacing in its CSS becomes a knob, and the real app follows 1:1. Nothing is sent to a server and nothing is stored: close the tab and it is all undone. The code comes out as a patch, design tokens, or a DESIGN.md for your agent.
also
Ideelab
My design studio in Amsterdam. Product interfaces and the front-end that goes with them.
Firstmile
A small outfit where I help founders get early-stage products to market. Product and interface.
connect