This program does exactly what it says it does: smart replacement of files. It is extremely easy and simple to operate. And in my case, it solved a problem I had with NAS and NFS. Copying files using NFS protocol from OS X to a WD-NetCenter through the Finder is approximately 1/10th as fast as using SMB/CIF. I tried everything to find a way to speed up NFS because of the file naming problems with SMB. Nothing worked until I tried this program. It says it works through the Finder, and it does rely on the Finder to determine what to copy, but for the actual file transfer it uses the Finder only with single files. For folders and multiple files it uses an Open Source UNIX package called psync. In effect this works like a command-line copy (very fast) without the hassle of actually working in a command-line environment. In my case that meant a throughput increase to approx 6MB/sec from 600KB/sec on a 100T ethernet LAN.

Overall, it does what Copy Agent did under OS 9, but it also keeps a log of all files that are involved in Console logs. Well worth every dime. Thanks.