Iceweasel is the name of two currently independent Mozilla Firefox rebranding projects. One is part of the Gnuzilla project, a GNU project to provide versions of Mozilla programs which are made of entirely free software. The other is a rebranded build prepared by Debian in order to satisfy a demand from Mozilla that they either drop the Firefox name or comply with other terms that Debian policies find unacceptable.

Ok... this is getting ridiculous.

Iceweasel - Wikipedia, the free encyclopedia