Project Commander Dockable Palette
Available in Revit 2015 and later, the Project Commander Docking Palette is an excellent way to always display your project data in a non-intrusive way and without having to start the Project Commander. It is a dockable palette like Revits properties palette and project browser. It can be grouped together with the other palettes as shown below and brought to the foreground by selecting the tab at the bottom.
Note: if you modify the information in the Project Commander app it will not be displayed in the palette until a refresh is triggered. A refresh can be triggered by changing the active view in Revit or by right clicking the Project Commander palette and selecting "Refresh".