Free & Open-Source OmniGraffle Pro Alternatives

Mac diagramming application.

1. draw.io ↗ FOSSPRIVATESELF-HOST
   Free Visio-style flowchart and diagramming tool.
   ●○○Easy · Reads common file formats
2. Excalidraw ↗ FOSSPRIVATESELF-HOST
   Hand-drawn-style collaborative whiteboarding.
   ●○○Easy · Reads common file formats
3. yEd ↗
   Powerful free desktop diagramming app.
   ●○○Easy · Reads common file formats