Laffey Computer Imaging
Whatmask
FreeSimplify Subnet Calculations and Mask Conversions with Whatmask
Windows
rpl
Freeterminal window app, replaces text strings in multiple files
MacThe Exorcist
FreeStop the SevenDust virus from installing or spreading any further.
MacMac NetLogger
Paidlogs IP syslog messages (UDP port 514) to a text file
Mac