From Fedora Project Wiki
Towards creating a list of Free database software..
Databases
- postgres
- mysql
- sqlite
- bdb
Tools for working with databases
- openoffice-base
- crunchyfrog
- tora
- teiid
plus schema visualizers, etc etc
Test Suites
Other stuff
- show/squeal/tabulate
- Tutorial D?
- XML databases?
- SPARQL?
- Object databases?