Download of CoyIM 0.3.7 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. 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. This free Mac app is a product of im.coy. The program belongs to Communication Tools.
From the developer:
CoyIM is a standalone chat client that focuses on safety and security. The Tor support allows users to become anonymous while chatting. The OTR feature makes end-to-end encryption of communication possible. And the TLS function adds another layer of encryption for the communication with chat servers.
You may want to check out more software for Mac, such as iChatMonitor, X-Lite 3 or Skype2Prowl 2, which might be similar to CoyIM.