SANET is a Network Management System for experts. It provides Command Line Interface for detailed target configuration with its own DSL (not only SNMP) and web 2.0 interface to display network status and topology maps.
StorageIM is a monitoring console for storage systems and networks designed around industry standards. StorageIM supports most storage arrays, switches, HBA's and storage libraries.
The JPL Server Monitor will check to ensure websites and server services are running and responding. It also tracks the response time of the site/service. There is a cron script that can be activated to automate the checks.