PeaZip Portable
PeaZip can extract most of archive formats both from Windows and Unix worlds, ranging from mainstream formats as 7Z, RAR, TAR and ZIP to experimental ones like PAQ/LPAQ family, currently the most powerful compressor available.
PeaZip supports creating archives with a wide range of compression and encryption standards, and allows to export job definition as scripts to bridge the gap between GUI and console applications, and let the user pick the best of the two worlds.