XPCSpy
Keylogger spy software Online - Powerful keylogger and spy software to monitor all activities on your pc.
http://www.x-pcsoft.com/

Scalable Cluster Environment
The world's largest development and download repository of Open Source code and applications
http://sourceforge.net/projects/sce/

Monet
A flexible monitoring tool, suitable for network monitoring, host performance tracking, and for the instrumentation of complex systems. [Open Source, GPL]
http://www.lfcia.org/projects/monet/

BGS Software
Oracle, SQL Server, DB2 Database Tools for Online Monitoring, Background Monitoring and save history, Space Managment.
http://boazl.com

Boxware
Network monitoring tool for monitoring devices on TCP/IP based networks. Software descriptions, screenshots, FAQs, demo download, and contact details.
http://www.boxware.dk/

Test Tool for IVR's
Voice Prover, a tool for IVR volume testing and IVR monitoring
http://www.havenbr.demon.co.uk

Moland - Monitoring Land Use / Cover Dynamics
Project aimed at providing a spatial planning tool that can be used for assessing, monitoring and modelling the development of urban and regional environments.
http://moland.jrc.it/

S.M.A.R.T. Linux
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)
http://smartlinux.sourceforge.net

Seaguard Ltd
Corrosion monitors designed by Seaguard Ltd makers of Sentry intelligent corrosion monitoring devices for marine and freshwater applications.
http://www.seaguard.co.nz/

Sysmon Home Page
Sysmon is a network monitoring tool designed to provide high performance and accurate network monitoring. Currently supported protocols include SMTP, IMAP, HTTP, TCP, UDP, Radius, NNTP, and PING tests
http://puck.nether.net/sysmon/