Elegant validation library for type-safe input data for TypeScript

An opinionated HTTP router with typed path params, built-in body validation, and a clean auth model.

Quickly rewrite git repository history (filter-branch replacement)

New Lichess mobile app in Flutter

👻 Ghostty is a fast, feature-rich, and cross-platform terminal emulator that uses platform-native UI and GPU acceleration.

Rivet Actors are the primitive for stateful workloads. Built for AI agents, collaborative apps, and durable execution.

The Bluesky Social application for Web, iOS, and Android

📦️ Continuous (Preview) Releases for your libraries!

Categorized overview of programming principles & design patterns

Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one

📦🔍 Find the true size of an npm package

Parser for the Liveblocks schema language

🧩 The Browser Extension Framework

A Jest transformer with source map support that lets you use Jest to test projects written in TypeScript.

🤖 Just a command runner

A proof of concept for a Lobby room.

Durable Object Groups

Pixel Art Together is a multiplayer pixel art editor powered by Liveblocks.

Realtime infrastructure for multiplayer apps and agents

A simple mass search & replace tool

Generate type-safe resolvers from your GraphQL schema definition.

Mirrors actions/upload-artifact but for s3

Package your Node.js project into an executable

Ideas for a new kind of programming language

Generate flowtype definition files from TypeScript

Simple job queues for Python

Prettier is an opinionated code formatter.

A set of tools to keep your pinned Python dependencies fresh.

A nicer Python indentation style for vim.