Site URL
IBPhoenix http://www.ibphoenix.com/resources/documents/
IBSurgeon https://ib-aid.com/en/articles/​
The Firebird News site http://www.firebirdnews.org
Firebird FAQ site — very rich content http://www.firebirdfaq.org
Ivan Prenosil's Firebird/InterBase site http://www.volny.cz/iprenosil/interbase/
FireBase (in Brazilian Portuguese) http://www.firebase.com.br
Firebird French community documentation http://firebird.developpez.com/faq/
Firebird 2.0 online manuals at Janus Software http://www.janus-software.com/fbmanual/
Stefan Heymann's Firebird articles http://www.destructor.de/firebird/
Firebird documentation at Russian Firebird portal iBase.ru http://ibase.ru/articles​