IM Lock controls and blocks access to Instant Messaging and peer to peer services. Free trial version available - sets up in less than a minute. Blocks all popular services: MSN Messenger, Yahoo Messenger, ICQ, AIM, Skype, eMule, iTunes, and more.
BrowseControl can totally deny access to the Internet. Or, you can allow access to specific company/classroom sites through the Allowed List feature,
all other sites will be restricted.
ShareAlarmPro monitoring network access to shared folders and resources, allows to see parameters of the workstation which tries to establish a connection with your computer.