Compare Extended WPF Toolkit Editions
The free, open source Community Edition is provided here on CodePlex under the Microsoft Public License and without technical support. The
Plus Edition is at least one release ahead, adds additional controls and features, and if you get the 1-year subscription, includes technical
support and updates. There is also Xceed Business Suite for WPF which adds the full-featured version of the industry's best datagrid:
Xceed DataGrid for WPF.
Here is a detailed table with the features in each edition: