NAV is described as '(Network Administration Visualized) is a free software program to monitor networks, developed by UNINETT and used by universities and corporations around the world' and is an app in the Network & Admin category. There are more than 25 alternatives to NAV for a variety of platforms, including Linux, Windows, Online / Web-based, Mac and Android. The best alternative is Zabbix, which is both free and Open Source. Other great apps like NAV are Nagios (Freemium, Open Source), Spiceworks (Free), Datadog (Paid) and PRTG Network Monitor (Freemium).
Gather and analyze accurate statistics and performance metrics, visualize it, get notified about current and potential issues without delay, and take advantage of our time-tested professional development and support.
Datadog is a monitoring service for IT, Dev & Ops teams who write and run applications at scale, and want to turn the massive amounts of data produced by their apps, tools and services into a unified view of IT infrastructure. 120+ Integrations!.
An advanced network monitoring solution to monitor network up/downtime, traffic and usage. Features include availability, performance, and bandwidth monitoring (SNMP, WMI, packet sniffing, NetFlow), instant alerts, reporting, failover clustering.
Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work.
Observium is an autodiscovering PHP/MySQL/SNMP based network monitoring which includes support for a wide range of network hardware and operating systems including Cisco, Linux, FreeBSD, Juniper, Brocade, Foundry, HP and many more.
Racktables is a nifty and robust solution for datacenter and server room asset management. It helps document hardware assets, network addresses, space in racks, networks configuration and much much more!