If Yoono FireFox Add Ons can be used as Chat Client for Yahoo Messenger, Windows Live Messenger and AIM aka AOL Messenger, ChatZilla is Mozilla FireFox Add Ons that built and design as IRC Chat Client (Internet Relay Chat). With ChatZilla from your FireFox Internet Browser you can chat in IRC Room or with your friend of IRC or other users without need to open MiRC or others IRC Chat Client.
Features in ChatZilla IRC Chat Client
Download ChatZilla FireFox Add Ons
ChatZilla is freeware, you can download directly at Mozilla FireFox Add Ons. For further information about ChatZilla FireFox Chat Client Add ons, just visit official website of ChatZilla.
Download ChatZilla: ChatZilla