Yes, both ArcGIS 3D Analyst and SelfCAD offer a Free Trial.
ArcGIS 3D Analyst is designed for Large Enterprises, Medium Business and Small Business.
SelfCAD is designed for Individuals, Large Enterprises, Medium Business and Small Business.
The starting price of SelfCAD begins at $11.99/Month when Billed Yearly, while pricing details for ArcGIS 3D Analyst are unavailable.
Some top alternatives to ArcGIS 3D Analyst includes SURE Aerial, 3-GIS, 3D Slash, Giraffe, 3ds Max, Recap Pro, Intergraph Smart 3D, Agile GIS and Concept3D.
Some top alternatives to SelfCAD includes 3D Slash, Clara.io, SketchUp, 3ds Max, ZBrush, formZ, Onshape, BricsCAD and Autodesk Design Review.