Sacha Guyon
I'm a product manager working on dev tools and AI agents. From France, based in Brooklyn, NY. Design and engineering roots.
About this site
View source
This is the 2026 reboot of my personal site. It started when I found an old fork of htmleditor sitting in my GitHub — a page that shows its own source and lets you edit it live. That trick always fascinated me, so I rebuilt the site around it. Every page here is editable: press / to open the code, tweak it, watch it update. The editor also has an AI prompt built in, because hey it's 2026 — who really types code anymore.
I learned a lot of what I know by reading other people's code. When I started using the web I spent as much time hitting "view source" as browsing — then came open source, Linux, Ruby on Rails...
Every single web page you visited contained the code showing you how it was created. The entire internet became a library of how-to guides on programming.
— Clive Thompson, Coders
Playing with code
The animations come from my fascination with creative coding. Demos, Processing, John Maeda, Flash-era websites, and FWA: I'd spend hours playing with code just for the pleasure of building something satisfying to watch move.
Then came information design, data visualization, Bret Victor's explorable explanations — code that could teach, tell stories, and help people create. That got me into analytics, observability and the broader dev tools space.