Permissive Free Software License
Description
From the Wikipedia [1]:
" A permissive free software licence is a class of free software licence with minimal requirements about how the software can be redistributed. This is in contrast to licences which have reciprocity / share-alike requirements.[1] Both sets of free software licences offer the same freedoms in terms of how the software can be used, studied, and privately modified. A major difference is that when the software is being redistributed (either modified or unmodified), permissive licences permit the redistributor to combine the licensed material with other licence terms, potentially adding further restrictions to a derived work, while copyleft licences do not allow further restrictions (among other possible differences). "
(http://en.wikipedia.org/wiki/Permissive_free_software_license)