Are there any good open source .NET chart components out there that are good for large data plotting and real-time charting? I saw some related topics but they were since 2010 and older, so I'm not sure if they are still valid.



Syncfusion provides a Chart library for all .NET platforms. While not open source, the libraries are available under a community license as well (see details below).

Essential Chart for WPF

Essential Chart for Windows Forms

Essential Chart for ASP.NET

Essential Chart for ASP.NET MVC

Chart Performance

The whole product is available for free through the community license if you qualify (less than 1 million USD in revenue).

Note: I work for Syncfusion.

  • This license is still available in 2020. It's a very powerful product and a bit of a game-changer for hobbyists and small businesses looking to code sophisticated charts and UIs - I'm not aware of anything open-source that's even in the same ballpark. – Tullochgorum Apr 16 '20 at 11:49

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