LibreNMS is an autodiscovering PHP/MySQL-based network monitoring system forked from Observium. It aims to be easy to use and painless to deploy, and to support monitoring of a wide range of devices. Observium's license changed to a modified QPL license in May 2012, then was split into free and commercial versions. The aim of LibreNMS is to continue to create a usable NMS, but with a community focus and GPL licensing.
Meshtool is a mesh network toolkit designed to assist in mesh monitoring, administration, and research. It is Eclipse-based and leverages many Eclipse frameworks such as EMF, GEF, and Teneo. OpenStreetMap is used for 2D map data while 3D geographic data support is in early development stages through the Nasa World Wind. Meshtool is still in an alpha stage, but is being actively developed.
MN Viewer (Mobile Network Viewer) is a lightweight framework designed for system administrators who would like to be able to monitor many aspects of their network from their mobile phone. It allows for very simple expansion using simple PHP plugins. It is designed to integrate with other monitoring tools such as Cacti.
Panoptes is a scalable, extensible network and host monitoring tool. It includes a dynamic Web management interface based on the Dojo toolkit. It monitors SNMP, TCP port availability, ICMP, HTTP response and content, and SSL certificates internally. It supports monitoring anything else via shell scripts. It also includes a packet capture tool for discovery of hosts, port, and OS.
MyQoS Free Version is a bandwidth management solution based on FreeBSD 4.X. It provides all the necessary features for a small ISP to do QoS. It is limited to 2Mb/s unless you upgrade to the Standard Version. It is distributed as an appliance image. This image can be burnt to CD for testing before installation.
Opsview Core is a network monitoring software application. It solves the challenges of monitoring modern IT and network systems. It is a drop-in replacement for Nagios Core, with full support for its plugins and 100% compatibility. It is easy to install and configure and is ideal for monitoring applications networks, and Windows, Linux, and Unix servers. VMWare, KVM, Xen, and Microsoft Hyper-V are supported, and Amazon EC2 and other cloud services can be monitored. It works with Opsview Mobile to allow you to monitor your systems on the go.