Path Finder v7.3 - Mac OS X

The Finder, reinvented:
Path Finder is an award-winning file browser and management application for Mac OS X. If you've ever wished Apple's Finder just did feature X or feature Y, Path Finder may be what you've been looking for.

Path Finder is a standalone application that leverages what you already know about working with your files. It takes the Finder's familiar interface and adds numerous powerful features and interface innovations to help anyone be more productive on Mac OS X.

Dual Pane File Browser:
View the contents of two folders or volumes side-by-side in one window.
Drop Stack
Freeze drag & drop operations by placing files into a temporary stack.
Tabs & Bookmarks
Use the best features of a web browser in your file browser.
File List Sorting & Filtering
Sort by folders first, or limit a list of files by name or extension
Command Line tools

Path Finder puts a terminal right in your file browser, and provides a graphical interface to some popular UNIX utilities.

More info: http://cocoatech.com/pathfinder/