Dundas Chart for SharePoint is a must-have for those looking to add advanced charting functionality to SharePoint 2007 projects. Based on Dundas Chart for ASP.NET v5.5 technology and optimized for SharePoint, the product provides wide-ranging features and is backed up by Dundas' outstanding technical support. Dundas Chart for SharePoint is also offered in two editions: MOSS 2007 and Windows SharePoint Services.
Regardless of whether you are implementing charting for internal projects or building data visualization applications for clients, Dundas Chart for SharePoint lets you create superior visualizations from your data without having to use Visual Studio!
thx to Igor: http://blogs.devleap.com/igor