nagios-notify is a template-based notify script for Nagios. The templates can be easily edited in a text editor. You can change templates without restarting Nagios. With advanced templates, you can send richtext (even images) over jabber if you use nagios-notify-jabber. It depends only on basic Unix utilities.
The Business Objects XI Monitoring plug-in is a software package for monitoring the operation and usage of BusinessObjects XI and Crystal Reports servers. It works with the widely used infrastructure management frameworks, Nagios, HP OpenView, and IBM Tivoli. The plugin is able to check scheduled and manual report runs, measure execution times, and evaluate and eliminate errors before business processes are severely impacted.
Lilac is a configuration tool for Nagios 3. Its features include enhanced Nagios 3 time period support, multiple template inheritance, host templates able to contain services, dependencies, and escalations, an importer which can import existing Nagios configurations and import from a Fruity installation, an Exporter with Nagios process control, the ability backup existing configuration files, and an auto-discovery tool to quickly add your infrastructure into your Nagios installation.