Eiffel Forum License

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, is the first version to be GPL compatible. EFLv2 has been approved by the OSI, and is approved as a free software license by the FSF.

The Eiffel Forum License is one of the shortest licenses that is OSI approved.

Example application
Since this is a published licence it may be referenced from a work using the following simple statement:

Copyright 2008, Author Name, example.org Licensed under the Eiffel Forum License 2.