Yes, both Miro and Microsoft Visio offer a Free Trial.
Miro is designed for Large Enterprises, Medium Business and Small Business.
Microsoft Visio is designed for Medium Business and Small Business.
Pricing for Miro Starts at $8/User/Month when Billed Yearly whereas for Microsoft Visio Starts at $5/User/Month.
Some top alternatives to Miro includes Collaboard, Microsoft Whiteboard, WhiteboardFox, Conceptboard, MURAL, Lucidspark, Whimsical, Board, Zoom Whiteboard and Witeboard.
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.