With Rucksack you can extract archives with a simple drag and drop. Rucksack can open RAR, StuffIt, 7zip, DMG, Zip and many more formats.

Rucksack makes creating archives a breeze: simply drag in the files you want to archive, pick a filename and archive format, and click Next.

You just received an archive but it's in the wrong format? With Rucksack you can seamlessly convert archives from one format to another, for example from RAR to Zip.

Rucksack gives you some flexible, powerful options to make your work easier, such as choosing where to open archives and ignoring Mac OS X system files.