SketchUp
Yes, both Snaptrude and Navisworks offer a Free Trial.
Snaptrude is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Navisworks is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Navisworks begins at $78/Month when Billed Yearly, while pricing details for Snaptrude are unavailable.
Some top alternatives to Snaptrude includes YouBIM, SketchUp, BIMx, Vectorworks Architect, Navisworks, Archicad, Revit LT, Vectorworks Designer, BricsCAD and bimU.io.
Some top alternatives to Navisworks includes Autodesk BIM 360, YouBIM, BIMx, BIM Track, Vectorworks Architect, Vectorworks Landmark, Archicad, Revit LT and bimU.io.