Ircle X is a real-time IRC software that allows users to communicate with other internet users globally.
With approximately 20,000 users and 5,000 channels across IRC worldwide, Ircle X provides the following key features: the program runs on almost every Mac/Mac OS, you can have up to 10 different server connections at once, and it's completely customizable. Additionally, it can be scripted using AppleScript, has fast DCC (file transfer), has a small footprint but includes all necessary functionality. The software is also available in English, French, Italian, Danish, and German translations (with more on the way).
While evaluating Ircle X for your specific needs, it's important to note that it is restricted to a 30 day period.
Version 3.5 Alpha 6: N/A