If one wishes to monitor another, and has access to the target’s computer…
MonitorerX Pro records everything each user writes with the keyboard and saves it. This way you can always check what each user was doing (writing) on the computer. Additionally, MonitorerX Pro takes screenshots on user defined intervals so you can view what the users were doing! MonitorerX Pro is running completely in the background, it is invisible in the Finder, Dock, ForceQuit menu and Login Items menu.
http://www.red-byte.com/monitorerxpro.htmlShould you wish to know if you are being monitored, then in that case…
MacScan is designed to detect, and remove spyware, keystroke loggers, Trojans, and bring awareness to remote administration type applications which could have been maliciously or inadvertently installed on your Macintosh. It Detects, Isolates & Removes:
-Spyware
-Keystroke Loggers
-Trojan Horses
-Administration Applications
http://macscan.securemac.com/No doubt a search of VersionTracker would yield other similar programs.
FWIW, I have no experience with either of these programs.
HTH
Harv