Here is a collection of various open source software documentation. This is an effort to put all the documentation in one place to not only be easy for me to search but also the general public. It would inlcude documentation such as monarch, nagios, etc.
Click here for various Linux man pages for different commands that have been used in articles on Question Defense.
Main Monarch Documentation:
Monarch Management of Nagios Hosts
Monarch Managing Nagios Contacts
Monarch Managing Nagios Hosts
Monarch Services Template
Monarch Time Periods