DataRobot
Yes, both EDraw Max and CardBoard offer a Free Trial.
EDraw Max is designed for and Small Business.
CardBoard is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for EDraw Max Starts at $99/Year whereas for CardBoard Starts at $8.50/User/Month when Billed Yearly.
Some top alternatives to EDraw Max includes Miro, FigJam, MindManager, SmartDraw, Gliffy, Microsoft Visio, Creately, Lucidchart, DrawSQL, Quick Diagram, diagrams.net and yEd Graph Editor.
Some top alternatives to CardBoard includes Collaboard, Miro, FigJam, StoriesOnBoard, SmartDraw, Gliffy, DrakonHub, FlowMapp, diagrams.net, FeatureMap, Board and HackerDraw.