I am the author of a database documentation tool called SqlSpec, selling it myself as shareware. If you work with databases it could be interesting to you. You can use it to find out how a database is put together, or if you are a freelancer you can use it to document the databases you build and give that documentation to your clients. Also, I donate free licenses to any charity, non-profit, or open source project.
You can try it out here: http://www.elsasoft.org
It supports every major DBMS on the market, and some you have probably never heard of!
Here are all the platforms it supports:
Microsoft SQL Server 2000/2005/2008
Microsoft Analysis Server 2005/2008
Microsoft Report Server 2005/2008
Microsoft Integration Server 2005/2008
Microsoft Access 97 and above
Oracle 9i and above
MySQL 5.0 and above
PostgreSQL 8.0 and above
Teradata 13.0 and above
DB2 8.2 and above
Sybase ASE 12.0 and above
Sybase SQL Anywhere 10.0
Informix IDS 10.0 and above
VistaDB 3.0 and above
ENEA Polyhedra 7.0 and above
Raima RDM Server 8.1
here are a couple screenshots:http://elsasoft.org/images/screen1.pnghttp://elsasoft.org/images/screen3.pnghttp://elsasoft.org/...ges/add_comments.png
Thanks for reading!