Geetalk 1.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The actual developer of this free software for Mac is GeeTalk. The software is categorized as Communication Tools.
From the developer:
Geetalk is a mobile and desktop app that allows you to connect to multiple instant messaging, social networking, and phone accounts at the same time. You will not need to switch between various services - instead, you can manage all of your accounts from one place. With this tool, you can see all your notifications in real time on your screen.
You may want to check out more software for Mac, such as ituwitter, TwitterTool or ImageQuix, which might be similar to Geetalk.