Job Monarch is an addon to the Ganglia Monitoring System that provides batch job monitoring and archiving plus a graphical overview of clusters and assorted batch systems. Fully supported batch system: Torque, PBS and SLURM. Experimental: LSF, SGE
Naplax is a set of addons and plugins to the Nagios project. This includes an addon which allows service checks on remote hosts to send their state to nagios via email.
Apan, Advanced Performance Addon for Nagios, is a tool that is used to store performance-related data from service-checks done by Nagios (www.nagios.org).