The working reference for frontend system design

fearchitect is a reference for engineers who make frontend architecture decisions: concise topics on rendering, state, performance, and security, each built around the tradeoffs — what breaks, what it costs, and when to choose it over the alternative.

Every topic is authored for accuracy and recall, not SEO filler. No account, no paywall. The whole site is local-first and offline-ready, so you can look something up on a plane or drill flashcards on the go.

Alongside the reference sits the AI Lab: a curated directory of AI coding tools, generators, and protocols, picked for real frontend work and refreshed quarterly.