ACE file formatEdit
The ACE file format can be decompressed on Mac OS X using the freeware (but closed-source) unace port available from the WinAce website. At the time of writing the latest version (2.5) is not a Universal Binary but can run on Intel-eqipped machines under the Rosetta compatibility layer. In my tests unace reproducibly exited with segmentation faults but only after completing the listing/extraction operations, so the tool is usable despite the flaw.
Usage
UNACE v2.5 Copyright by ACE Compression Software Nov 16 2003 22:54:41
(Mac OS X) ported to the Mac by Kolja Koischwitz
Usage:
UNACE <command> [-<sw1> ...] <archive> [<base_dir>\] [<files>/@<filelist>]
<Commands> t Test archive integrity
e Extract files v List archive (verbose)
l List archive x Extract files with full path
<Switches> (default) (default)
c[-] Show comments (+) p<pass> Set password
f[-] Full path matching (-) y[-] Assume yes on all queries (-)
o[-] Overwrite files (-)
x<files/@list> Exclude <files> or files in <list> from process