The rise and fall of famo.us...

TL;DR

Famo.us raised $30M by GPU-accelerating CSS layouts to make web apps feel native, but browsers caught up and made their engine obsolete.

Key Points

• 1.Famo.us was born from a failed LinkedIn/Hot-or-Not startup called Bench Rank. While building their web app around HTML5 limitations, they discovered they could hijack the CSS Matrix3D property to push rendering work to the GPU, dramatically improving performance.
• 2.The core tech replaced the browser's layout engine with a Cartesian coordinate system using 4x4 matrices. Every element's position, size, and animation was determined by these matrices, enabling consistent cross-device rendering — and somehow convincing investors to hand over $30 million.
• 3.Three forces killed Famo.us after its June 2014 launch. Browsers natively adopted GPU compositing tricks, React made declarative UI mainstream, and the Famo.us API demanded deep knowledge of math, physics, and JavaScript — skills most UI developers lack.
• 4.With 25 employees and a founder opposed to lean startup philosophy, the economics collapsed. Hosting and monitoring revenue attempts failed, the engineering team was laid off entirely, and a final pivot to a marketing CMS also folded, leaving the website now for sale.