Firebird is "a relational database that runs on Linux, Windows, and a variety of Unix platforms. The Firebird Project is a commercially independent project of C and C++ programmers, technical advisors and supporters developing and enhancing a multi-platform relational database management system based on the source code released by Inprise Corp (now known as Borland Software Corp) on 25 July, 2000".

http://www.securiteam.com/securitynews/5TP0L2KN5C.html