Need Recommendation on Networking Montioring Appz

[punker]

Just wondering what the best Network Monitoring Applications are. Theres a lot out there and I hate trying half a million demo softwares so im hoping you guys might be able to help me out. We have 28 sites across Canada and im looking for a software that will alert me of latency issues before the lines go down and just report general bandwidth info and monitoring. Any ideas??

Thx.

[spud]

What's Up gold from Ipswitch is quite good.

Big Brother from Quest Software is ok as well

I believe there is a product called nagios (open source so it's free)

[punker]

Thx, i'll give'em a go.

[tguy]

Monitor Magic is a good one too.