Mac users interested in Rar for montain lion generally download:
Organize your compressed archives in all popular compression formats including RAR, ZIP, CAB, ARJ, LZH, ACE, TAR, GZip, UUE, ISO, BZIP2, Z, and 7-Zip. Save precious disk space, reduce transmission costs, and optimize your valuable working time. Detect and utilize the most effective compression method for each specific file.
Extract files from RAR archives on your Mac. Drag-and-drop archives straight to the window or double click the file to open it. The solution works with password-protected RAR archives as well as processes split multi-volume RAR files. Use Expand in the file menu to expand an archive.
