ChessKhelo

ChessKhelo is a free, open source online chess server designed for players seeking a clean, ad-free environment to play and study chess. The platform allows users to play chess games with friends, against the computer, or with random opponents, without requiring registration or the installation of plugins. It is positioned as a libre service, emphasizing accessibility and openness.

The platform supports a variety of play modes, including creating lobby games, participating in arena and Swiss tournaments, and hosting or joining simultaneous exhibitions. ChessKhelo also offers a comprehensive suite of chess puzzles, such as Puzzle of the Day, Puzzle Streak, Puzzle Storm, and Puzzle Racer, along with themed puzzles and a puzzle dashboard to track progress. For those interested in learning, the site provides resources covering chess basics, coordinate practice, study materials, and access to coaches.

Additional features include the ability to watch live broadcasts, follow streamers, explore a video library, and engage with the community through forums, teams, and blogs. Analytical tools are available, such as an analysis board, openings explorer, board editor, game import function, and advanced search capabilities. The platform also mentions accessibility features like blind mode and offers a mobile app.

ChessKhelo operates without advertisements and is supported by donations and a patron program. Its source code is openly available, underlining its commitment to being a libre and community-driven chess server.