Chess application whichs allows working with chess PDF books and PGNs.
A promising chess program
SJCE - free portable cross-platform graphical chess game, 100% Java.
Extensive Java chess database libraries.
Take the chess graphism, and use it with a chess engine.
A chess application : game with human and/or computer
A simple network chess game
PGN Viewer Oslo to load PGN chess notations from flat text file
Just aims to be a chess board (free to make your moves).
Read and write PGN format and test moves for legality.