ChessPad - ChessPad is a feature-rich chess game viewer and PGN file editor available for Windows.
e4e5 - Casual, minimal chess app
ChessDB - ChessDB - a free Chess database for Mac OS X, Windows, Linux, and UNIX - like ChessBase, but better
Storm Chess - Exciting and immersive game played right in a browser
Chess Opener - Easily explore, analyse and practice chess openings
Chesscademy - A fun and free way to learn chess.