Open Source monitoring tool to integrate with HPOV / Geneos ITRS / BMC / HP OVO
Can anyone suggest a good open source monitoring tool that can be integrated to receive alerts from licensed tools like HPOV / Geneos ITRS / BMC / HP OVO?
I'm trying to help out a friend, their company uses several licensed monitoring tools which are very costly, so im trying to verify if its possible to integrate them into an open source monitoring tool, could be a number or combination of tools working together (front-end, back-end, etc).
Someone already suggested Nagios, are their any other that anyone could suggest? thanks.