Firebird is a relational database offering many ANSI SQL-99 features that runs on Linux, Windows, and a variety of Unix platforms. Firebird offers excellent concurrency, high performance, and powerful language support for stored procedures and triggers. It has been used on production systems under a variety of names since 1981.

The "superclassic" architecture uses a new thread to handle each connection. This allows for good scaling on multi-processor machines without consuming too much operating system resources.

This package contains the 2.5 branch of Firebird.

Firebird 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) under the InterBase Public License v.1.0 on 25 July, 2000.