Borland Community: Devoted to all aspects of the Borland developer community.
Easysoft: Commercial ODBC 3.5 driver, available with UNICODE support.
Fingerbird.de - Fingerman's door to Firebird: Complete overview with actual news, links and publications about Firebird.
Firebird (database server): encyclopedic explanation: Short introduction to Firebird.
Firebird (InterBase: IBPhoenix): Information, Downloads and Tools for FireBird.
Firebird - Developer Site: Official Developer Site with the complete sources.
Firebird JDBC-InterClient: Download site and actual project information.
Gemini InterBase ODBC Driver: Firebird ODBC driver for using in desktop office productivity tools, 2 and 3-tier middleware software, web-platforms on Windows operation systems [commercial].
IBExpert.com: IB Expert client software for Windows, free version for personal use available.
ibWebAdmin: PHP-based open-source web frontend for InterBase and Firebird, (similar to phpMyAdmin).
InterBase World - InterBase / Firebird portal: Interviews, news, technical articles and other useful information about InterBase and Firebird.
Marathon SQL-Tool: Open source SQL-tool for Firebird.
XTG Systems: Provides a free ODBC driver for Win32. A Linux version is being developed [LGPL].