TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

Next generation frontend tooling. It's fast!

Interactive Data Visualization in the browser, from Python

Etherpad: A modern really-real-time collaborative document editor.

State Management and Multiplayer Networking for Turn-Based Games

Functional programming in TypeScript

Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.

Mobile/Web chess UI for lichess.org

Record a chess game live and upload the PGN to Lichess

Simple PGN viewer with the necessary features to display chess games

Chess and chess variant rules and operations in TypeScript

Zstandard for browser, Node.js and Deno

Chess game analyzer

Zulip bot that posts messages in a stream at a fixed date.

Multi-purpose Zulip bot for the Lichess workspace