Cockatoo 2.0 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. We recommend checking the downloaded files with any free antivirus. The actual developer of this Mac application is Nikolai Nagornyi. The program lies within Audio & Video Tools, more precisely Music Production.
From the developer:
Cockatoo is perfect if you're one of those who uses iTunes to listen to music. It provides a much simpler way of managing it, leaving you to do other things on your Mac. Sure, you can control iTunes from its interface and also from the Dock (right-click the iTunes icon), but this just isn't suitable for all users.
Cockatoo quietly waits for you at the left or right border of the screen without occupying any space.
You may want to check out more Mac applications, such as Cockatoo for iTunes Lite, which might be related to Cockatoo.