1)   EazyDoc 2.0
EazyDoc documents the structure of MS-SQL 2000 & 2005 databases. The final product is an easy-to-read Word document that can include: Primary Keys, Field Information (type, size, identity, nullable, description), Indexes, Check Constraints, etc.

 2)   Apex SQL Doc 2005.11
Apex SQL Doc is a powerful tool to document your sql server database into HTML and CHM help Documentation including VS2005 style and HTML 2.0 support.

 3)   DBScribe for MySQL 1.1
Leadum DBScribe is a free powerful tool to document MySQL database into HTML, CHM help, MS Word Documentation. It supports: rich set of output formats and styles, wizard and command line interfaces, complete database structure documenting