7Zip is primarily used for unpacking .zip files. This is the unix/linux graphical interface port of the highly popular 7zip archiving tool. A very powerful and versatile archiver that definetly helps to compliment your distros default archiving utility.
Xarchiver frontend for manipulating 7z, arj, bzip2, gzip, rar, tar, and zip files. It allows you to create archives and add, extract, and delete files from them. Password protected archives in the arj, 7z, rar, and zip formats are supported.
File-roller is an archive manager for the GNOME environment. It allows you to view, create, modify, and extract archives. File-rollers supports most all file compression formats including but not limited too .tar, .tar.gz, .gz, .zip, .7z, .iso, .jar, and more.
Ark is a graphical program for managing various archive formats within the KDE environment. Archives can be viewed, extracted, created and modified from within Ark.