Chess application whichs allows working with chess PDF books and PGNs.
Chess Database and Toolkit program
Chess Database and PGN viewer
Zoomable user interface (ZUI) with file manager, file viewers and more
A promising chess program
a UCI chess engine
Chess program
SJCE - free portable cross-platform graphical chess game, 100% Java.
Chess Database Application
A console/ncurses chess engine frontend and PGN editor.
Extensive Java chess database libraries.