DragThing
Used by 4 peopledragthing.com ↗
“I'm a longtime user and fan of DragThing, because it lets me organize things about a million times better than the OS X Dock ever has.”
Eric Meyer Interview, Web standards monkey · via Uses This 
“So in addition to the Dock, I run DragThing with two docks: a "process dock" growing down from the upper right corner, a la Mac OS 9, and a "folder dock" in the lower right corner containing my most frequently accessed folders.”
John Siracusa Interview, Programmer, writer (Ars Technica) · via Uses This 
“DragThing for a system-wide drag-and-drop shelf.”
John Gruber Interview, Writer (Daring Fireball) · via Uses This
