ComponentOne Studio for SharePoint has been discontinued and is no longer available. ComponentOne will continue to provide support for Studio for SharePoint through March 15, 2014. The Silverlight tools provided in Studio for Silverlight can still be used to create your own Web Parts.
C1 launch SDK for Web Parts in SharePoint 2010
Released: May 26, 2011
Updates in this release
Updates in 2011 V2
New Web Part - OLAP for SharePoint allows you to pivot large data sets with a grid, summary chart and report in a single Web Part. No cubes, development, or special database tools necessary.
SDK now available - ComponentOne Web Parts are now easy to customize. Use the free SDK and Microsoft Visual Studio to develop Silverlight extensions (.xap files) and upload them to SharePoint 2010.