The new Azure Portal introduced a new control UI that is called "Blade Panel" or "Blade View" I think. It has the UI pattern of master details that keeps getting deeper and where the details display to the rights of the parent content. There is a BladeView control in the UWP Community Tool Kit (see ), but I wonder if there are any open source or third party javascript/HTML5 renditions out there? If so, can someone elaborate on which are the best?