Firebird SQL Server is a database server based on InterBase 6.0. open source code.
There exist Firebird distribution packages for Windows, Linux, Unix, Solaris,
MacOS, 32-bit and 64-bit architecture. Firebird SQL Server is distributed free of charge and has no license restrictions.
Download Firebird 2.5.9 Release
32-bit Classic, Superclassic & Superserver. Executable Windows installer.