www.mozilla.org
It is kind of like, but isn't an alternate version of netscape. Basically, after Netscape 6 was such a bad browser, Netscape released the source code to it. A team took up the code, and changed it into what Mozilla is. Netscape 7 is based on the work the Mozilla team did. It's not like Kazaa litye though, because:
a) It's more feature rich than Netscape is (usually, depends on ver. ##s). It does everythign Netscape does and more.
b) Little is removed from Netscape (like spyware, ad banners, features, the such). Only the stuff that was not necessary and the original code base were removed.
c) It's not a modification to Netscape. It's a seprate program completely. IT was made using the Netscape source code (K-Lite was used by tinkering with the Kazaa files, no Kazaa source code was used.)