ExplorerXP Vista Windows 7
English
FREEWARE
Nikolay Avrionov

Tabbed interface - all your windows (open folders) will appear inside a single ExplorerXP application.
The tab bar provides a quick access to all open windows
Easy access to My Computer, Recycle Bin , My Documents & Desktop
Drag & Drop with Explorer, the tab bar and special folders on the main toolbar.
Multy rename tool - allows to rename multiple files in one step.
Displays folder size information and the real size of compressed files & folders.
Folder Size Cache - greatly improves the speed of the folder size calculations between sessions.
Merge / Split Tools.
Advanced copy/move.
Unicode support.
USB devices support.
Clean - recursively removes files that match given list of extentions or wildcards.
Groups - A group is a collection of folders, which users are able to access quickly or drag & drop files to them.
Configurable keyboard shortcuts.
Small download size - only 410 KB.

http://www.explorerxp.com/