Nagmin is webmin module for Nagios and is a versatile tool that manages and compliments Nagios. Unfortunately, Nagios will only support the Nagios 1.x versions and not the 2.x versions for the reason that the MySQL database support is no more available on Nagios 2.x versions. Nagmin had its very active work done sometime in 2004 and unfortunate it is not taken any further. However, in its last available state, it is still a very powerful tool to administer Nagios. Being an Admin myself, I wouldn’t prefer a different admin tool than Nagmin for Nagios.