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Looking for the latest Firebird? Go to the Firebird 5.0 download page.
Firebird 4.0 introduces new data types and many improvements without radical changes in architecture or operation, the most important are: logical replication, longer metadata identifiers, international time zone support, timeouts for connections and statements.
Documentation: Release Notes (PDF available), Language Reference (PDF available) and other manuals.
 Win32 |
Win64 |
 Linux x86 |
Linux AMD64 |
 Android ARM32 |
Android ARM64 |
| Release Date | File Name | Size | Description |
| Sources | |||
| July 14, 2025 | Firebird-4.0.6.3221-0.tar.xz | 29 MB | Compressed tarball |
| Win32 |
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| 32-bit Kits | |||
| July 14, 2025 | Firebird-4.0.6.3221-0-Win32.exe | 15 MB | Windows executable installer, recommended for first-time users |
| July 14, 2025 | Firebird-4.0.6.3221-0-Win32.zip | 21 MB | Zip kit for manual/custom installs |
| 32-bit Debug Kits (Binary + PDB components) | |||
| July 14, 2025 | Firebird-4.0.6.3221-0-Win32-pdb.exe | 29 MB | Windows executable installer (debug information included) |
| July 14, 2025 | Firebird-4.0.6.3221-0-Win32-pdb.zip | 46 MB | Zip kit for manual/custom installs (debug information included) |
| Win64 |
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| 64-bit Kits | |||
| July 14, 2025 | Firebird-4.0.6.3221-0-x64.exe | 25 MB | Windows executable installer, recommended for first-time users |
| July 14, 2025 | Firebird-4.0.6.3221-0-x64.zip | 23 MB | Zip kit for manual/custom installs |
| 64-bit Debug Kits (Binary + PDB components) | |||
| July 14, 2025 | Firebird-4.0.6.3221-0-x64-pdb.exe | 41 MB | Windows executable installer (debug information included) |
| July 14, 2025 | Firebird-4.0.6.3221-0-x64-pdb.zip | 48 MB | Zip kit for manual/custom installs (debug information included) |
| Linux x86 |
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| 32-bit Kits | |||
| July 14, 2025 | Firebird-4.0.6.3221-0.i686.tar.gz | 22 MB | Compressed tarball |
| July 14, 2025 | Firebird-debuginfo-4.0.6.3221-0.i686.tar.gz | 181 MB | Debug build, compressed tarball |
| Linux AMD64 |
|||
| 64-bit Kits | |||
| July 14, 2025 | Firebird-4.0.6.3221-0.amd64.tar.gz | 19 MB | Compressed tarball |
| July 14, 2025 | Firebird-debuginfo-4.0.6.3221-0.amd64.tar.gz | 184 MB | Debug build, compressed tarball |
| IMPORTANT! Android builds were not thoroughly tested, therefore they should be treated as experimental. Please report any problems you experience to the development mailing list. |
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| Android ARM32 |
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| 32-bit Kits | |||
| July 14, 2025 | Firebird-4.0.6.3221-0.arm.tar.gz | 28 MB | Compressed tarball |
| July 14, 2025 | Firebird-withDebugInfo-4.0.6.3221-0.arm.tar.gz | 84 MB | Debug build, compressed tarball |
| Android ARM64 |
|||
| 64-bit Kits | |||
| July 14, 2025 | Firebird-4.0.6.3221-0.arm64.tar.gz | 31 MB | Compressed tarball |
| July 14, 2025 | Firebird-withDebugInfo-4.0.6.3221-0.arm64.tar.gz | 84 MB | Debug build, compressed tarball |