Chatzilla is described as 'ChatZilla is a clean, easy to use and highly extensible Internet Relay Chat (IRC) client, built on the Mozilla platform, which provides all the usual features: multiple servers, a built-in list of standard networks, easy searching and sorting of available channels, logging, and' and is an app in the social & communications category. There are more than 50 alternatives to Chatzilla for a variety of platforms, including Windows, Linux, Web-based, Mac and Self-Hosted apps. The best Chatzilla alternative is SeaMonkey, which is both free and Open Source. Other great apps like Chatzilla are HexChat, mIRC, irssi and Quassel IRC.