4th Firefox Icon
Funny Firefox Icons
Commercial usage: Not allowed
Firefox Icon
Round App Icons
Black Metal Programs Icons
Purple Lines Icons
Lipse Greyscale Icons
Lone Shadow Icons
Commercial usage: Allowed
Ray-Tech Icon Pack
Crispy Icon Pack
Flat Icons Add-on 1
MMII FLAT Icons 4
Kare Web Browser Icons
Light Icons
Alumin Folder Icons
Hex Icons Pack
Firefox v2 Icon
Flat Icons
Boxed Metal Icons
Cold Fusion HD Icons
3D SoftwareFX Icons
Circle Icons
Simply Pixel Icons
Playcons Icons
Buttonized Icons
3D Social Box Icons
Stark Icons
Aquave Metal Icons
Firefox 2 Icon
Omnom Icons
Lipse Icons