title: What are your favorite open source or free library for .NET Charts and Gauges?
body: <p>For a in-house hardware monitoring utility, I need to use gauges and charts to help visualize various metrics. Is there any good open source or free charting and gauge library available for .NET? I am not interested in purchasing any components (which excludes components such as Dundas Charts &amp; Graph, which I know would do the job, but would not fit in our budget).</p>
  
  <p><strong>Edit:</strong> I also know about Google Charts API. The actual application needs to work without an internet connection, so it is out of the question in this particular case.</p>