File archiver by KDE (source files)
Ark is a graphical file compression/decompression utility with support for multiple formats, including tar, gzip, bzip2, rar and zip, as well as CD-ROM images. Ark can be used to browse, extract, create, and modify archives.
* Several formats supported: gzip, bzip2, zip, rar, 7z and more
* Preview file contents without extracting files