Yes, both CardBoard and Microsoft Visio offer a Free Trial.
CardBoard is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Microsoft Visio is designed for Medium Business and Small Business.
Pricing for CardBoard Starts at $8.50/User/Month when Billed Yearly whereas for Microsoft Visio Starts at $5/User/Month.
Some top alternatives to CardBoard includes Collaboard, Miro, FigJam, StoriesOnBoard, SmartDraw, Gliffy, DrakonHub, FlowMapp, diagrams.net, FeatureMap, Board and HackerDraw.
Some top alternatives to Microsoft Visio includes Miro, FigJam, SmartDraw, Gliffy, DrakonHub, Creately, 10SCAPE, Sankey Flow Show, Lucidchart, EDraw Max, Quick Diagram and diagrams.net.