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 - Developer Site - Official Developer Site with the complete sources.
Firebird (InterBase: IBPhoenix) - Informations, Downloads and Tools for FireBird.
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 sofware, web-platforms on Windows operation systems [commercial].
Marathon SQL-Tool - Open source SQL-tool for Firebird.
MER Systems Inc - Interbase open source builds for windows.
XTG Systems - Provides a free ODBC driver for Win32. A Linux version is being developed [LGPL].