Yes, both CL3VER and SelfCAD offer a Free Trial.
CL3VER is designed for Large Enterprises, Medium Business and Small Business.
SelfCAD is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for CL3VER Starts at $36/User/Month when Billed Yearly whereas for SelfCAD Starts at $11.99/Month when Billed Yearly.
Some top alternatives to CL3VER includes 3D Slash, SelfCAD, Clara.io, SketchUp, SkyCiv, 3ds Max, Cinema 4D, Renderfy, Rapid Mockup and Concept3D.
Some top alternatives to SelfCAD includes 3D Slash, Clara.io, SketchUp, 3ds Max, ZBrush, formZ, Onshape, BricsCAD and Autodesk Design Review.