A suite of Monitoring Plugins (formerly known as nagios-plugins)
Disk Inspection and Monitoring
An eye on your system
SQL operating system instrumentation and monitoring framework
Light-weight system monitor for X
Zabbix extension that reports various HDD status using various tools
Cross-platform async library for system information fetching
Performance monitoring and logging software for Linux and Windows.
Software, Server and Application Monitor
A server and database monitoring platform.
Library for reading nfdump files
Daemonlogger is a packet logger and soft tap developed by Martin Roes
Expert system to take decsion under Unix/Linux systems,