Arena

Arena is a FREE available Graphical User Interface (GUI) for chess programs (engines) by Martin Blume. Arena runs on Win95, NT4 or higher Microsoft OS versions. Arena is compatible to Winboard protocol I, II and UCI protocol I, II.

Free Windows Linux

Scid vs. PC

Shane's Chess Information Database is a powerful Chess Toolkit, with which one can create huge chess databases, run engine analysis, or play casual games against the computer or online with the Free Internet Chess Server.

Free Open Source Mac OS X Windows

ChessX

ChessX is an Open Source chess database. With ChessX you can operate on your collection of chess games in many ways: browse, edit, add, organize, analyze, etc.

Free Open Source Mac OS X Windows Linux

Chess Assistant

Chess Assistant 13 Houdini 3 is a unique tool for managing chess games and databases, playing chess online, analyzing games, or playing chess against the computer. Chess...

Commercial Windows

ChessDB

chessdb - a free chess database for mac os x, windows, linux, and unix - like chessbase , but better.

Free Open Source Mac OS X Windows Linux BSD