Chess Position Trainer
- Focusing on training openings. Provides downloads, testimonials, demonstration videos, and support. [Windows]
- http://www.chesspositiontrainer.com/

ICOfY.net
- Database of current and past events.
- http://www.icofy.net/

ChessAssistance.com
- Articles for ChessAssistant. Provides downloads, reviews, and FAQs.
- http://www.chessassistance.com/

ChessPad
- A free chess database program for Windows 95 and NT. Includes download, change log, and information on how to use in conjunction with Crafty.
- http://www.wmlsoftware.com/chesspad.html

Jose Chess Database
- A database with a graphical front-end for viewing and editing games. Features screenshots, a manual, and downloads.
- http://jose-chess.sourceforge.net/

Scid
- Free chess database for Windows and Unix
- http://scid.sourceforge.net/

Bookup
- Chess database program used primarily for modeling chess opening repertoires.
- http://www.bookup.com/