Gliffy offers Free Trial, but ProcessOn does not.
ProcessOn is designed for Individuals, Medium Business and Small Business.
Gliffy is designed for Large Enterprises, Medium Business and Small Business.
Pricing for ProcessOn Starts at $58.80/Year whereas for Gliffy Starts at $8/Month when Billed Yearly.
Some top alternatives to ProcessOn includes Miro, FigJam, SmartDraw, Gliffy, Cacoo, Microsoft Visio, DrakonHub, Creately, EDraw Max, Quick Diagram, diagrams.net and HackerDraw.
Some top alternatives to Gliffy includes Miro, FigJam, SmartDraw, Cacoo, Microsoft Visio, DrakonHub, Creately, Lucidchart, EDraw Max, DrawSQL, Quick Diagram and diagrams.net.