What are your favorite open source or free library for .NET Charts and Gauges?

Question

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 & Graph, which I know would do the job, but would not fit in our budget).

Edit: 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.

Answer 1

I'm having a look at NPlot, but it looks a bit impenetrable at first glance.

Answer 2

My favorite one is ZedGraph.

Definitely a fantastic charting library.

Answer 3

The two I happen to have in my del.icio.us account:

Are FLOT for jQuery.

And this posting at Code Project for Gantt Charts

Answer 4

I know this isn't open source, but it's worth noting that Microsoft just released a free charting pack for ASP.NET and WinForms. More details here.

Answer 5

ZedGraph definitely.

I use charts for large data-sets, 1,000,000 data points and upwards. ZedGraph is succinct, performant and succeeds in rendering these beast-like-graphs much faster than lots of commercial products I've tried like: Nevron SyncFusion DevExpress ChartFX Dundas (hence also Microsoft Charts)

ZedGraph has some specific high performance features that are un-paralleled like FilterPointList which dynamically snap-shots your data when you are zoomed out, and doesn't use snapshots when you are zoomed in.

Answer 6

http://www.codeproject.com/KB/miscctrl/A_Gauge.aspx?msg=1900283