Neither SmartDraw nor ProcessOn offers a free trial.
SmartDraw is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
ProcessOn is designed for Individuals, Medium Business and Small Business.
Pricing for SmartDraw Starts at $5.95/Month whereas for ProcessOn Starts at $58.80/Year.
Some top alternatives to SmartDraw includes Miro, FigJam, Floorplanner, Gliffy, Cacoo, Microsoft Visio, Creately, Lucidchart, EDraw Max, Quick Diagram, diagrams.net and yEd Graph Editor.
Some top alternatives to ProcessOn includes Miro, FigJam, SmartDraw, Gliffy, Cacoo, Microsoft Visio, DrakonHub, Creately, EDraw Max, Quick Diagram, diagrams.net and HackerDraw.