Windows only: Create custom folder bookmarks accessible from your keyboard in any Explorer window or save or open file dialog with freeware system tray application Dirkey. You can set any folder as a bookmark on-the-fly by pressing Ctrl-Alt-0..9, then quickly jump to any of your bookmarks by pressing Ctrl-0..9 for the corresponding bookmark (e.g., if you set a folder as a bookmark with Ctrl-Alt-1, you can access that folder any time by pressing Ctrl-1). Dirkey does the work of previously mentioned applications like FindeXer, PlacesBar Editor, and FinderStyle but offers the quickest access to both creating new bookmarks and jumping to your most frequently used folders. Dirkey is freeware, Windows only.