QtMozilla - Port using the Qt widget set (for *nix) - http://www.mozilla.org/ports/qtmozilla/
Mozillux - Mozillux is a project whose objective is to improve the integration of the products from Mozilla.org in the most popular Linux desktops, mainly KDE. This involves the making of themes for Mozilla, Firefox and Thunderbird that match the look of the other d - http://www.polinux.upv.es/mozilla/
Amizilla - Community based site concerning porting Mozilla to the Amiga platform. - http://www.discreetfx.com/AmiZilla.html
Mozilla for IRIX - Port to the SGI OS IRIX. - http://oss.sgi.com/projects/mozilla/
BeZilla - Port for the BeOS - http://www.mozilla.org/ports/beos/
Fizzilla - Port to Mac OS X (rhapsody) using the compatibility API (Carbon). - http://www.mozilla.org/ports/fizzilla/
Warpzilla - Port to OS/2 Warp - http://www.mozilla.org/ports/os2/
GTK+ - Port to the GTK+ widget set (for *nix). This is now the official *nix version of Mozilla. - http://www.mozilla.org/ports/gtk/
mozAmiga - Port to the Amiga Digital Environment (AmigaDE). - http://mozamiga.mozdev.org/