What are the best Mac OS X file managers?

Path Finder is a Finder replacement utility that aims to bring powerful file management options into an interface that closely resembles the native OS X Finder. Some of the features include a drop stack to temporarily collect files for operations, dual finder panes to see two folders side-by-side, browser-like tabs, batch renaming, powerful file search, file tagging, hex editing, permissions, source control systems, built-in terminal, and many other features.