RAR archiver Mac
App name: RAR for Mac 5.50
App description: Archive manager
App website: http://rarlabs.com/
The good: Powerful, high compression engine
The bad: Limited features, command line only, and trial version.
How to create archive RAR
rar a archive.rar new
The command is going to add files from directory new to archive.rar
How to extract archive RAR
unrar x archive.rar
The command is going to extract files with directory folder.