Windows only: Free software DM2 adds all sorts of windowing, desktop and folder management enhancements to Windows.
With DM2 installed you get 4 virtual desktops, custom Open/Save dialog folder locations (can you say godsend?), and the ability to minimize any window to the system tray. Also, right-click the minimize button to send any window to a floating, transparent icon that stays on top but doesn't crowd your taskbar. Warning though: If you do install DM2, be sure to delete the SHIFT+HOME, SHIFT+END and SHIFT+UP hotkeys straightaway, otherwise selecting whole lines of text via the keyboard doesn't work. DM2 is a free download, Windows only. Thanks, Sander and Leon for the essential DM2 tip! — Gina Trapani