Yes, both SelfCAD and Maya offer a Free Trial.
SelfCAD is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Maya is designed for Large Enterprises, Medium Business and Small Business.
Pricing for SelfCAD Starts at $11.99/Month when Billed Yearly whereas for Maya Starts at $215/Month.
Some top alternatives to SelfCAD includes 3D Slash, Clara.io, SketchUp, 3ds Max, ZBrush, formZ, Onshape, BricsCAD and Autodesk Design Review.
Some top alternatives to Maya includes Adobe Animate, 3D Slash, SketchUp, 3ds Max, ZBrush, Cinema 4D, Modo, formZ and U-RENDER.