OpenNMS - Project home page of OpenNMS - a java based network managememnt platform developed under the Open Source model
Cumulus Linux - Build an efficient, affordable data center network using open networking software that runs on Linux using web-scale principles.
The Dude - MikroTik is a Latvian company which was founded in 1996 to develop routers and wireless ISP systems. MikroTik now provides hardware and software for Internet connectivity in most of the countries around the world.
CloudView NMS - CloudView is a standards-based network management and monitoring system (NMS).
NetXMS - NetXMS is an enterprise grade multi-platform open source network management and monitoring system.
OP5 Monitor - OP5 Monitor - The enterprise level open source monitoring solution that allows users to have complete control over their IT infrastructure.