Downloading Cotap 2.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free Mac application is CoTap, Inc. The software relates to Communication Tools. 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.
From the developer:
Cotap is a secure messaging program for business teams. You can create group conversations and send messages to anyone you work with, just using their name. The coworkers and business connections who use Cotap are automatically added to your contacts.
You may want to check out more software for Mac, such as PhoneAmego, iChatOnLogin or Luscious SMS, which might be related to Cotap.