Long a Mac user favorite under OS9, FinderPop has actually been available for OSX as a system preferance pane for some time now, although oblivious to us. In a nutshell, FinderPop creates a folder, ~/Library/FinderPop, into which you put nested folders of aliases, which can point to apps, documents, folders, volumes, you name it. And all this pops up, hence the name, when you left-click on any blank area of the menu bar or right-click just about anywhere (except in an open file window).
On its own, FinderPop also shows open apps and the desktop. Here you see how FinderPop appears as a contextual menu when you right-click. FinderPop is "pintware," meaning that if you like it you're expected to send its creator, Turly O'Connor, a PayPal contribution of five Euros (or more) to spend down at the pub. You can download it HERE.