Mac OS X 10.5 (Leopard) introduced "Stacks" in the Dock. Many people, however, prefer the previous implementation of hierarchical popup menus from folders in the Dock. Quay is a simple app that brings back the hierarchical menus, but with several additional capabilities.

Why use Quay instead of some other, superficially similar, application? Quay items are on the right (or bottom) side of the Dock, just like you're used to. There are no apps running on the other side of the Dock; no extra distracting "running" lights. It uses the system's Dock, not a secondary palette or window.

Quay is a simple Cocoa application. You run it just to configure a popup item in the Dock. The Dock icons can be customized for better recognition. For the popups, it runs an on-demand background tool that uses very little CPU time and memory.

Quay does no magic. It doesn't hack the Dock in any way, and calls no private system interfaces.