Although Firebird 2.5 has reached its and is no longer actively maintained, the Firebird Project continues to host the final stable release, v2.5.9 , for archival purposes.
Available as executable installers (.exe) for full SuperServer/Classic setups or as zip kits for manual/embedded installs. firebird 2 5 download
The release of Firebird 2.5 was a major step forward in modernizing the codebase. Key improvements included: Although Firebird 2
New Services API features enabled real-time monitoring and analysis of database activity. firebird 2 5 download
