7zr file archiver with high compression ratio p7zip is the Unix port of 7-Zip, a file archiver that archives with very high compression ratios. p7zip provides: - /usr/bin/7zr a standalone minimal version of the 7-zip tool that only handles 7z archives. 7z compression is 30-50% better than ZIP compression. - /usr/bin/p7zip a gzip like wrapper around 7zr. p7zip-full provides 7z and 7za which support more compression formats.