ConferenceRoom 4.0 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. ConferenceRoom for Mac lies within Communication Tools, more precisely Social & Blogging.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The actual developer of this software for Mac is Webmaster Incorporated.
From the developer:
ConferenceRoom is a browser-enabled chat/conferencing/messaging server application that allows companies to interact with clients or staff, dissolving geographical barriers, customer support without the aggravating wait, sales worldwide without expensive international offices, product development when the team is spread out geographically.
You may want to check out more software for Mac, such as ituwitter, Raptr or TwitterTool, which might be similar to ConferenceRoom.