The latest version 0.60 of VS Solution Dependency Visualizer contains a couple of UI improvements.
The VS solution file (.sln) and C# project files (.csproj) are now parsed in a background thread which displays the current activity. So no more long operations blocking the application.
Another new feature is the “Reload Solution” button. This allows you to make changes to the solution in Visual Studio, and update the changes into VS Solution Dependency Visualizer. The selections made in the solution’s tree view survive the reload.
The (inappropriate) distinction between “GAC assemblies” and “System assemblies” has been dropped, as the difference between the two was originally the “Copy Local” attribute. (A future version will parse and display more detailed information about projects and assemblies and their relations)