Yes, both Gliffy and Collaboard offer a Free Trial.
Gliffy is designed for Large Enterprises, Medium Business and Small Business.
Collaboard is designed for Individuals, Large Enterprises, Medium Business and Small Business.
The starting price of Gliffy begins at $8/Month when Billed Yearly, while pricing details for Collaboard are unavailable.
Some top alternatives to Gliffy includes Miro, FigJam, SmartDraw, Cacoo, Microsoft Visio, DrakonHub, Creately, Lucidchart, EDraw Max, DrawSQL, Quick Diagram and diagrams.net.
Some top alternatives to Collaboard includes Microsoft Whiteboard, Miro, Explain Everything, FigJam, Groupboard, WhiteboardFox, Remotings, DigStack, Zoom Whiteboard, Collabtools, Witeboard and Scribble Together.