ZedGraph
The charting library for .NET
created by John Champion
forked from https://sourceforge.net/projects/zedgraph/
ZedGraph is a class library, user control, and web control for .net, written in C#, for drawing 2D Line, Bar, and Pie Charts. It features full, detailed customization capabilities, but most options have defaults for ease of use.
Download
ZedGraph is available via NuGet: