Visual SOS is both a standalone application (x64) and extension for Visual Studio that exposes functionality in SOS (debugging extension) not available in Visual Studio Debugger.
Visual Studio extension - https://marketplace.visualstudio.com/items?itemName=AngelHernandezMatos.VisualSO-Extension-1-0
More information here - http://www.angelhernandezm.com/visual-sos-visual-studio-extension-to-debug-managed-applications-through-sos/