Downloading Zingg! 1.4 for Mac from our website was free. The application lies within System Tools, more precisely File Managers. This free software for Mac OS X is an intellectual property of Rainer Brockerhoff.
From the developer:
Zingg! is a simple contextual menu for the Finder. It shows you a list of all applications that claim to open a particular file. A similar capability is now built into Mac OS X 10.2 (Jaguar). However, Zingg! lets you configure certain applications to appear always or never in the pop-up, you can also set it to not show Classic applications when the Classic environment isn't running.
You may want to check out more software for Mac, such as d-d Zone, FileVaporizer or SoundBite, which might be related to Zingg!.