Every Web part included in ComponentOne Studio for SharePoint can be customized. All you need to do is create a .XAP file that implements one of the Studio for SharePoint extension interfaces, upload it to a library, and point to it through the On-Board Designer.
There is a powerful extension framework that you can use to add your own features. All you need is the free Studio for SharePoint SDK and Visual Studio. See http://www.componentone.com/SuperProducts/SharePointWebParts/Developer+Center/.
Sample extensions are available on the Studio for SharePoint Demo Site. Go to http://webparts.componentone.com and see the Extensions Library on the left.
To navigate to a different site collection, enter the URL in the Site field or select a site collection from the drop-down menu. Entering a / in the Site field will always return you to the top of the list.