Development Windows
Firebird
Build SQL-backed applications with Firebird, a free, open-source relational database engine. This entry links to the Firebird 5.0.4 Windows x64 installer.
- Operating system
- Windows
- Architecture
- x64 (64-bit)
- Download package
- EXE installer
Selected package: Firebird-5.0.4.1812-0-windows-x64.exe. Separate x86 and manual-install ZIP kits are available. Exact Windows-version support is not asserted here.
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What is Firebird?
Firebird is a relational database engine for applications that need SQL queries, transactions, stored procedures and triggers. It can run as a Windows service and provides a choice of SuperServer, SuperClassic and Classic server modes. The Firebird 5 release line adds SQL query profiling and parallel processing for operations including backup, restore and sweep.
The linked package is the 64-bit Windows executable installer for Firebird 5.0.4; 32-bit and manual-install ZIP packages are separate. Windows installation requires administrator privileges. Plan an upgrade around your database format: the Firebird 5 engine can open Firebird 4 databases, but it cannot directly open databases created by Firebird 3 or earlier. Back up existing databases before replacing an installation and follow the publisher’s migration guidance.
The screenshot comes from the official Firebird 5 Quick Start Guide and shows the 5.0.0 setup wizard, not a hands-on test of 5.0.4.
What it offers
- Use SQL queries, transactions, stored procedures and triggers in database-backed applications.
- Choose SuperServer, SuperClassic or Classic server mode; Windows service operation is supported.
- Profile SQL and PSQL execution with the Firebird 5 profiler.
- Use Firebird 5 parallel processing for backup, restore and sweep operations.
Good to know
- Windows installation requires administrator privileges.
- The standard Firebird 5 engine does not directly open databases created by Firebird 3 or older; migration requires preparation and backups.
Product images

Sources
References used for this listing. Retrieval dates do not indicate hands-on testing.
- Firebird: Firebird 5.0.4 ↗Retrieved
- Firebird 5 Quick Start Guide — revision 0.3, 2 April 2024 ↗Retrieved
- Firebird: Features ↗Retrieved
- Firebird 5.0.4 Release Notes ↗Retrieved
- Firebird: Licensing ↗Retrieved
- Firebird: Public Documentation License ↗Retrieved