ChessLab, desktop #chess program written in #lisp with a new GUI toolkit.
https://tomscii.sig7.se/2025/11/ChessLab-A-program-for-chess-players
> record and replay games, move table, positions analysis, play against the computer (UCI engine, stockfish), solve puzzles, 3D chessboard, selectable board surface and piece set…
Lisp = "Insane productivity!"