It probably isn’t the best of the alternatives, but it’s a $30 value free today only.
You can read about it and get it here: http://www.giveawayoftheday.com/xyplorer-11-90/
One big minus with XYPlorer is the inability to get 2 panes for dragging and dropping.
Remember: Make a restore point, don’t install it if you don’t need it, do some research and choose “Advanced” set up to avoid any tool bars, etc.
Other alternatives are Xplorer2 (which has a portable version), FreeCommander, Total Commander, and DOpus.
There are others as well.