Where can I find a Geodatabase schema designer for ArcPro?

[ChristinaMcCullough2]

Is there a comparable version for ArcGIS Pro?  The desktop version is available on GitHub, GitHub - nicogis/Geodatabase-Diagrammer: Geodatabase Diagrammer ArcGIS for Desktop 

[George_Thompson]

Here is an equivalent tool for a fee. I am not sure if there are other "free" ones out there.

Sparx Systems' Enterprise Architect - ArcGIS Geodatabase Design | UML | Enterprise Architect 

Pulled from the help doc: A note about the use of UML for geodatabase design—ArcGIS Help | ArcGIS Desktop