Yes, both Miro and Cardsmith offer a Free Trial.
Miro is designed for Large Enterprises, Medium Business and Small Business.
Cardsmith is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Miro Starts at $8/User/Month when Billed Yearly whereas for Cardsmith Starts at $9/Month when Billed Yearly.
Some top alternatives to Miro includes Collaboard, Microsoft Whiteboard, WhiteboardFox, Conceptboard, MURAL, Lucidspark, Whimsical, Board, Zoom Whiteboard and Witeboard.
Some top alternatives to Cardsmith includes Collaboard, Microsoft Whiteboard, Miro, Explain Everything, FigJam, Conceptboard, Board, DigStack, Canva Whiteboards, Jamboard, Witeboard and CardBoard.