WinRar

WinRAR is a powerful tool for file archival and compression. It compresses files using RAR compression which has a greater maximum compression ratio than that of ZIP format.

WinRAR can also read many other archive formats such as:
 * ZIP
 * CAB
 * ARJ
 * LZH
 * TAR
 * GZ and TAR.GZ
 * BZ2 and TAR.BZ2
 * ACE
 * UUE
 * JAR (Java Archive)
 * ISO (ISO9660 - CD image)
 * 7Z
 * Z (Unix compress)