Opsview is an award-winning open source network and application monitoring suite that provides status checking over the entire IT infrastructure, including physical, virtual and hybrid cloud environments. Key features include automatic discovery, availability monitoring, easy-to-read performance graphs, sophisticated alerting, an easy-to-use web portal, and much, much more.
Company: Opsview
Website: http://www.opsview.com/downloads
FREE
Tool - Monitor Real Time Health & Performance of Any Device!
I like the Device Monitor because it enables me to quickly monitor real-time performance of any device with a nifty desktop dashboard! It has a collection of monitors for popular network devices and also has the ability to send alerts if your device is unavailable.
Solarwinds free monitor makes it quick & easy to monitor and check the performance of a router, firewall or any SNMP enabled device.
