There's no shortage of Windows Explorer replacements. While many offer features missing from Windows Explorer like dual pane viewing or tabs, UltraExplorer goes a few steps further. Here are just a few of the features packed into this light weight file manager for Windows:

• Built in command line window that syncs with the open folder
• Viewer window for previewing the contents of selected files
• Dual pane viewing
• Shortcuts for changing views (thumbnails, list, details, etc)

Probably the coolest feature is a "Drop Stack" window which is like a super-charged copy and paste clipboard. Just drag a file or group of folders to the Drop Stack, change folders, and drag them fromt the stack to your new window.

You can also install UltraExplorer on a portable USB flash drive by copying the contents of the installation directory to your flash drive.

[via Lifehacker]