https://nav.uninett.no/

http://www.perfsonar.net/about/what-is-perfsonar/

Installation

http://www.observium.org/docs/screenshots/

http://www.packetfence.org/about/overview.html

http://www.networkworld.com/article/2825879/network-management/7-free-open-source-network-monitoring-tools.html

http://sourceforge.net/projects/netdisco/

Create Your Own Network Assessment Appliance

http://www.opennms.org/wiki/Download