Xceed Chart for .NET by Xceed Software Inc

Fast, stunning charts. Uses OpenGL (3D and 2D) and GDI+ (2D) for fast-rendering charts. Not only does this allow for impressive lighting, fill effects, and smooth chart elements, but it also means very fast, real-time rendering on most systems.
Full-featured. You name it, it's in there. 14 major 2D/3D chart types, flexible axes, scaling, legends, drill-down, built-in toolbar and grid, 30+ formulas, 135 samples with source, multi-chart display, and much more.

Technically superior. Written in managed code, can use the video card's OpenGL abilities for ultra-fast real-time rendering, fast-loading object, is CLS compliant, no external dependencies, and more. Source available.

Unique capabilities. How about chart editors for creating and modifying charts that also work at run-time? Or 3D charts with 360 degree rotation, multiple light sources and projection types, and a wide variety of drag operations?

Serious support, serious company. Our high-quality components are backed by an equally strong technical support team. Their quick response time with help and solutions earns them praise from our customers on a daily basis.
Features:

Written entirely in managed C# (except for OpenGL module). Source code will be available in a future Blueprint Edition.

Not a .NET interface over a recycled ActiveX component.

All error handling works through .NET exception classes.

Object-oriented design created specifically for the .NET framework.

100% Unicode support.

Can be used in C#, VB.NET, and Managed C++.

Fast loading object with efficient memory usage.

Documentation fully integrated into Microsoft Visual Studio .NET.