Gambit Poker

Chess.com is an online chess platform and community operated by Chess.com, Inc., founded in 2005. It provides live and correspondence play, lessons, puzzles, computer opponents, news and tournaments, and reports a user base of over 250 million members.

King's Gambit is a browser-based 3D chess game in which sculpted, rigged character pieces from the Ivory Kingdom, Sun Empire, or Grande Armée march, attack, and dissolve during cinematic captures. It supports standard chess rules—including castling, en passant, promotion, checkmate, stalemate, repetition, the fifty-move rule, and insufficient-material draws—through chess.js, while a Web Worker search engine provides the computer opponent. The game is built with Vite, React, TypeScript, and three.js; it is a static site with no backend or account requirement.

Lichess is a free, ad-free, open-source online chess server developed as the Lila project. It supports real-time games, tournaments, simultaneous games, forums, teams, puzzles, studies, shared analysis, a search engine, a mobile app, and an HTTP API. Computer analysis is distributed through Fishnet and Stockfish running on a cluster of donated servers; rated games are published in a free PGN database. Lila is written in Scala 3 with a modified Play framework. Its asynchronous server uses Scala Futures and Pekko streams, while a separate WebSocket server communicates through Redis. MongoDB stores games indexed by Elasticsearch, and the TypeScript web client uses Snabbdom and Sass. The project is licensed under the GNU Affero General Public License version 3 or later.

A video collaboration tool for hosting calls with guests and embedding participants into streaming and video-production software.

Rakazo is an open-source platform for running persistent AI teammates. Each bot has conversations, memory, routines, and history, and can access a browser, terminal, files, and a graphical desktop. Users can access bots through the web app, Electron desktop app, or Expo mobile app, and can take control of the graphical desktop when needed. The platform supports shared team computers and isolated private computers, bot delegation to peer bots or short-lived subagents, voice interaction, and user-provided model credentials through Pi. It can use Docker, E2B, Daytona, Box, or trusted local computers as computer providers, and supports integrations through Composio, Pipedream Connect, MCP, OpenAPI, and Treg sources. Rakazo can be self-hosted with Docker and is also available as a managed application. The repository describes it as being in beta and identifies a TypeScript stack using React, Vite, Tailwind CSS, Electron, Expo, Hono, oRPC, PostgreSQL, Prisma, Better Auth, and Graphile Worker.