Keka is a file archiver for OS X. It is available for free, but donations are requested to further the project. Similar to making a donation, you can also purchase Keka on the Mac App Store for $1.99 USD. Compression formats supported: 7z Zip Tar Gzip Bzip2 Extraction formats supported: RAR 7z Lzma Zip Tar Gzip Bzip2 ISO EXE CAB, PAX ACE