There is a certain irony in a Frenchman writing a license that isn't wholly applicable in France, due to Moral Rights. But I digress. This license is basically the same as the WTFPL (with slightly less profanity). It is Free and GPL-Compatible. A copy of the license text was taken from http://imapsync.lamiral.info/COPYING on 2012-07-09.
NO LIMIT PUBLIC LICENSE Version 0, June 2012 Gilles LAMIRAL La Billais 35580 Baulon France NO LIMIT PUBLIC LICENSE Terms and conditions for copying, distribution, modification or anything else. 0. No limit to do anything with this work and this license.