Free & Open-Source OmniGraffle Alternatives

Mac diagramming and graphic design.

1. draw.io ↗ ★ PICKFOSSPRIVATESELF-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