Anyway, some time ago I found this program, keko. It was after I had uninstalled all the different archiving applications and I needed to unzip a 7z-file. I went to http://www.7-zip.org, hoping to find a new and improved version of whatever OS X application I had used before, but there was a new addition in the list, that's right, keko.
First impressions are very good, key qualities are
- covers all the common formats