MacUnace 2.5 for Mac was free to download from our application library. The program belongs to System Tools.
From the developer:
MacUnace is an official port of unace. No need to run VPC any more.
unace is a port of the commandline tool unace, which is the uncompressing part of the excellent (but yet) closed source windows compression software WinACE. Its hard to beat compression results made it the preferred tool of many people on the net.