DaemonFS - DaemonFS is a real time file monitoring software.
WatchDirectory - WatchDirectory monitors a file system directory and performs tasks when certain conditions are met.
Watch 4 Folder - Watch 4 Folder is a simple to use, small and portable tool to monitor folders and file activities.
HDD Profiler - HDD-Profiler is a powerful HDD (Hard-Disk-Drive) profiling utility that will inform you which...
iWatch - iWatch is a realtime filesystem monitoring program.
fseventer - Graphically observe filesystem changes using the same underlying API as Spotlight.