KinkyBeepII is a synthesizer that lets you create sounds for effect or alert purposes on your Mac.
It has a folder of sample sounds to give you an idea of the results you can achieve.
You can easily create any weird, natural, animal or other sounds by using this program, and you can save the sounds as system sounds.
For more detailed information, including updates, please read the documentation or visit the homepage.
This program requires: Mac System 7.0 or later.