Firebird is a great application able to administer huge data bases without loosing stability and consuming low resources of the system.

It adapts to Linux and Unix surroundings and even to a 64-bits systems of Windows offering ANSI SQL-92 characteristics. Among its functions and capacities are: Full support for PSQL; support for incremental backups and many aggregates (plug-ins) of third parties to expand functionality.

With open code, several media and help forums offer excellent support and any of the plug-ins mentioned above.