OOo is the preferred abbreviation for OpenOffice.org, a free cross-platform and multi-lingual open source office suite. The OpenOffice.org suite consists of Writer (a word processor), Calc (a spreadsheet editor), Impress (presentation software), Draw (vector graphics editor), Base (database software), and Macro.
Have you upgraded to version 2 of OOo yet? It comes with Base, which you can use as a frontend to MySQL or PostgreSQL!!