OPTOSS Next Gen Network Management System (NG-NetMS)
...We successfully used NG-NetMS for delivery of network assessment services for our customers worldwide for many years. And now we want to share this unique and fully functional tool with community. It is not capped in terms of performance or number of nodes. The only limit is the hardware you deploy it on.
http://www.opt-net.eu/
S.M.A.R.T. Linux is a bootable floppy distribution containing tool (smartmontools) for monitoring IDE/SCSI hard disks (using Self-Monitoring, Analysis and Reporting Technology). It is based on Slackware Linux.