PeaZip 4.6.1 is the latest version that has been released recently. PeaZip is an archive and file manager that allows, in a single window, to manage archive files of different formats (compress, extract, convert, encrypt, etc.), and to manage files and directories with the help of a built-in file manager like you do in Nautilus, but with more useful options (browse, copy, move, cut, open terminal in current folder location, secure data deletion, find duplicate files, split/join files, etc.).
To install PeaZip 4.6.1 on Ubuntu 12.10/12.04/11.10 or Linux Mint 13 (Maya), open the terminal and issue these commands:
sudo add-apt-repository ppa:upubuntu-com/ppa
sudo apt-get update
sudo apt-get install peazip
PeaZip Home Page