InfoWorld: Open Source Network Monitoring Tools You Should Care About: MRTG and RRDtool

“In today’s ‘mash-up’ application development craze, the
innovation is being driven largely by the fact that APIs are now
more open and accessible, and presentation layer technologies such
as AJAX are creating very compelling new ways to visualize data
streams from multiple services. Developers can get to services more
easily, and with XML they can deliver the data in much more dynamic
ways via web applications.

“Similar trends are driving software development innovation
today in network monitoring…”

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