Zeecrowd 2.1.6 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 developed by Jabberbees. Zeecrowd for Mac is included in Security Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
Zeecrowd provides secure online collaborative applications spaces called "Crowds". Crowd administrators can choose who enters the crowd and who does what within the crowd. Only the crowd participants have access to the crowd's messages and data. The data sent through a crowd is encrypted.
Once you are connected, you can create and/or join as many crowds as you wish. You can choose a separate identity, if desired, for each of your crowds.
You may want to check out more Mac applications, such as TelnetLauncher, which might be related to Zeecrowd.