Clone Window is a tool for the toolbar in Finder windows.
AOL Desktop for Mac
AOL Desktop for Mac is an all-in-one AOL client with integrated mail, AIM, browser.
App Switcher is an application switcher for MacOS X similar to Windows' task switcher, or Proteron's LiteSwitch for MacOS 9.
Camouflage hides all the icons and leaves nothing but the pure wallpaper.
Desktop Manager is a project to implement a (hopefully) easy to use virtual desktop manager for OS X. Features include a desktop pager compatible with CodeTek's VirtualDesktop skins, hotkey support, switch transitions, virtual screens (only limited by available memory), and more.
Desktop Web Browser
Desktop Web Browser allows you to navigate on the internet and to display webpages directly on the desktop of the Finder.
(commercial) DesktopMagik lets you turn your desktop into practically anything you can think of. No more boring backgrounds, no more static images. DesktopMagik brings you images, websites and movies that display and play on your desktop, right under your icons.
dockDoubler duplicates the mac OSX Dock.
(commercial) DockExtender allows you to organize and access your applications, documents and web sites through custom menus that you create. You can create up to 10 separate menus that you can access through the Dock, menu bar or by pressing a HotKey. Items in your menus can be organized into as many submenus as you want, and sectioned by separator items.
dockLauncher is a simple application to manage links to documents, applications or folders and launch (open) them via a Dock's menu.
dockMover is a utility to move and position the Dock in Mac OS X.
DockRestarter is a handy AppleScript that relaunches your Dock when it freezes up.
HideItControl automatically hides your specified applications when they are not in the foreground.
HierarchicalDock is a simple application for creating folders in your Dock that have hierarchical menus.
Leopaque enables opacity of the menu bar in Mac OS X 10.5 (Leopard).
multiDock enables you to create and manage up to 128 Docks.
Point N See
Point N See is a utility to enlarge dynamically a portion of the screen to read fine print or see more detail in an image.
Virtue is a free virtual desktop manager providing an unlimited (configurable) number of virtual desktops.
WidgDock is a free and fully customizable dock. Size, orientation, background, transparency, colors, fonts... and a lot of others options.
XShelf enhances drag and drop in MacOS X by letting you "pause" drag and drop operations, as well as have multiple drag and drop operations in flight at once.