Effect-TS / effect

TypeScript library for building type-safe production applications with typed errors, dependency injection, structured concurrency, and schema validation.

lichess-org / lila

Open source server powering lichess.org, a free, ad-free online chess platform with realtime games, analysis, and tournaments.

tigerbeetle / tigerbeetle

A distributed database for financial transactions, built around debit/credit primitives with a consensus-replicated storage engine.