StuffIt

StuffIt is a very flexible, multi-platform compression software with universal use. The program lets you choose: Zip compression, StuffIt compression (about 20% smaller files) and more. With a right click of the mouse it lets you compress and email any file in one step. Using DropStuff, DropZip or Expander, you just click and drag-and-drop the selected files and StuffIt does the rest for you.

StuffIt also has its own Windows Explorer-like interface, making the program's advanced features accessible and improving archive management. StuffIt supports SIT, ZIP, RAR, ACE, ARJ, TAR, GZ, TGZ, LZH and CAB archive formats, plus MIME/B64, Uuencode, BinHex and MacBinary encoding and decoding.