Features in Total Commander 5.5 now include :
Two file windows side by side
Multiple language support
Enhanced search function
Compare files / synchronize directories
Quick View panel with bitmap display
ZIP, ARJ, LZH, RAR, UC2, TAR, GZ, CAB, ACE archive handling + plugins
Built-in FTP client with FXP (server to server) and HTTP proxy support
Parallel port link, multi-rename tool
New: File descriptions, RTF viewer, file system plugins
And many more!

http://www.ghisler.com/