GFI LANguard Network Security Scanner 

Security Vulnerability scanning and fixing with award-winning GFI LANguard Network Scanner - Download your free evaluation version today.
security network security network monitor network port scanner vulnerability scanning service packs

W2kEventLogReport 

Check your servers eventlogs daily with a scheduled intranet-report without duplicates, only the eventlogs since last scheduled run, and email with number of logs found since last time. Free install working unlimited 90 days!
event eventlog intranet event-id event-source applications system security error warning information local admin group

W2kTotalPowerWhere 

Can Your colleguage?s with Explorer (from their own W2k-workstation) read/modify/delete/create files on Your hard disc. And nobody can see if it happens. W2kTotalPowerWhere reports if You have this problem. Free install working unlimited 90 days!
local admin group w2k your colleagues got total power of pc from his own computer