Education●●Solid
Just Math It. Learn math interactively
Visual demos make abstract math concepts click better than static textbooks.
CozySolve My Problem
allanren
201mo ago

ELO-ranked math drills that turn calculus practice into a competitive sport.
Math students, competitive programmers, lifelong learners
Brilliant · Art of Problem Solving · Project Euler
Visual demos make abstract math concepts click better than static textbooks.
Live math CAS with shareable links and MCP hooks for Claude and ChatGPT.
Shithead on the web, but the market for niche card games online is thin.
Yet another ELO ranking tool, but Cloudflare Workers keep it fast.
Alternative chess rankings when Chess.com and Lichess already dominate.
Full chess engine in 2KB — demoscene-grade constraint coding transcends gaming.