Quote Originally Posted by Tellos Athenaios View Post
Ice Weasel is Firefox minus the Firefox brand (name, logo etc. etc. cannot be used without Mozilla's explicit permission).
Iceweasel is the Debian GNU/Linux specific version of Firefox, without the logo and branding. The GNU version of Firefox is called IceCat. Both are the same as Firefox.

Firefox started out, light and fast, it's gotten more and more bloated through successive versions.