iAdium 1.1 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac app was originally produced by Ethan Smith. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The software lies within Communication Tools, more precisely Texting & Video calls.
From the developer:
Adium is a free and open source instant messaging application for Mac OS X, written using Mac OS X's Cocoa API, released under the GNU GPL and developed by the Adium team. iAdium is a free and glassy like dock icon for the Adium IM client users out there.
You may want to check out more Mac applications, such as X-Lite 3, Skype2Prowl 2 or iChatMonitor 3, which might be similar to iAdium.