Yes, both Padlet Briefcase and Miro offer a Free Trial.
Padlet Briefcase is designed for Medium Business and Small Business.
Miro is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Padlet Briefcase Starts at $8.25/User/Month when Billed Yearly whereas for Miro Starts at $8/User/Month when Billed Yearly.
Some top alternatives to Padlet Briefcase includes Collaboard, Microsoft Whiteboard, Miro, Explain Everything, FigJam, Groupboard, Conceptboard, Board, Remotings, Collabtools, Jamboard and Witeboard.
Some top alternatives to Miro includes Collaboard, Microsoft Whiteboard, WhiteboardFox, Conceptboard, MURAL, Lucidspark, Whimsical, Board, Zoom Whiteboard and Witeboard.