How to unzip a file on a Mac so its content is usable on your computer

You can unzip a file on a Mac by double-clicking on it to open the file with Archive Utility, or by right-clicking and selecting "Open." ...

How to open a RAR file on your Mac computer, for downloading or sharing a large number of files

You can open RAR files on your Mac computer to share or download a large amount of files. Here's how to open RAR on a Mac ...
Ars Technica

".ace" files....How do I execute 'em?

Gents:<P>How do I execute an ".ace" file? I have "WinAce", I double-click the ".ace" file, the "archiver" window comes up...then what? Do I Create, Open, Extract, Add, whaaaa? <P>You'd think one could ...