The Eiffel Forum License (EFL) is a free software license written by NICE, the Non-Profit International Consortium for Eiffel.
Version 2 of the license, the latest as of 2008[update], is the first version to be GPL compatible.
[1] EFLv2 has been approved by the OSI,[2] and is approved as a free software license by the FSF.
[1] The Eiffel Forum License is one of the shortest licenses that is OSI approved.
[3] Since this is a published licence it may be referenced from a work using the following simple statement:[4]