http://www.picozip.com/

PicoZip is an easy-to-use award winning file compression utility packed with lots of user-friendly features that makes it a joy to use. This is a complete file compression and backup solution in one application. It offers extensive support for various archive formats found on the Internet, such as ZIP, RAR, ACE, ARC, ARJ, BH, CAB, GZ, JAR, LHA, LZH, TAR, TGZ, WAR, Z, ZOO, MIM, XXE and UUE, without the need for any third party software. PicoZip also integrates seamlessly to Windows to allow you to perform most archive operations from within Windows Explorer without having to run PicoZip first.