Yes, both UXPressia and CardBoard offer a Free Trial.
UXPressia is designed for Large Enterprises, Medium Business and Small Business.
CardBoard is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for UXPressia Starts at $20/User/Month when Billed Yearly whereas for CardBoard Starts at $8.50/User/Month when Billed Yearly.
Some top alternatives to UXPressia includes Figma, FigJam, Adobe XD, UXCam, UserX, UserZoom, Optimal Workshop, UX Metrics, Moyo App, FlowMapp, Adobe Experience Platform and The Experience Manager.
Some top alternatives to CardBoard includes Collaboard, Miro, FigJam, StoriesOnBoard, SmartDraw, Gliffy, DrakonHub, FlowMapp, diagrams.net, FeatureMap, Board and HackerDraw.