Chatmosphere IRC Chat Finder is described as 'Instantly connect to millions of people around the world with Chatmosphere IRC Chatfinder! With over 200,000 chat room topics to choose from, you’re sure to find something that interests you, and people who you can really connect with!' and is an app in the Social & Communications category. There are three alternatives to Chatmosphere IRC Chat Finder for a variety of platforms, including Mac, BSD, PortableApps.com, Windows and Linux. The best alternative is Thunderbird, which is both free and Open Source. Other great apps like Chatmosphere IRC Chat Finder are HexChat (Free, Open Source) and Colloquy (Free, Open Source).
HexChat is an IRC client based on XChat for Linux , but unlike XChat it’s completely free for both Windows and Unix-like systems. HexChat was originally called XChat-WDK which in turn was a successor of freakschat.
Traditionally, chat clients on the Mac have been anything but glamorous. Colloquy is an advanced IRC, SILC & ICB client which aims to fill this void. By adhering to Mac OS X interface conventions, Colloquy has the look and feel of a quality Mac application.