Neither OmniGraffle nor Quick Diagram offers a free trial.
OmniGraffle is designed for Medium Business and Small Business.
Quick Diagram is designed for Individuals, Medium Business and Small Business.
The starting price of OmniGraffle begins at $59.99One-time, while pricing details for Quick Diagram are unavailable.
Some top alternatives to OmniGraffle includes Miro, FigJam, Sketch, SmartDraw, Gliffy, Microsoft Visio, Creately, Lucidchart, EDraw Max, Quick Diagram, diagrams.net and HackerDraw.
Some top alternatives to Quick Diagram includes Miro, FigJam, SmartDraw, Gliffy, Microsoft Visio, Creately, Lucidchart, EDraw Max, DrawSQL, Isoflow, diagrams.net and yEd Graph Editor.