Log Event Correlation: using 'ESPER' opensource for this purpose.
This is a complete replacement for Nagios GUI
It is much more event-oriented, which Nagios lacks.
It includes perfdata graphing
this should be no big deal
Got an object that will be able to "match" things like :
* string in output
* values in parfdata
and so raise status or actions.
A bit like Zabbix triggers.