Firebird® modules are released under the Initial Developer's Public License. InterBase® was released by Inprise under InterBase Public Licence.
Both are variants of the Mozilla Public Licence V.1.1 (MPL).
Firebird Project documentation is released under the Public Documentation License unless stated otherwise.
Initial Developer's Public License Version 1.0
InterBase Public License
Public Documentation License
ECCN classification: 5D002 (no restrictions).