Yes, both SketchUp and Modo offer a Free Trial.
SketchUp is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Modo is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for SketchUp Starts at $119/Year whereas for Modo Starts at $1,909.
Some top alternatives to SketchUp includes Vectary, 3D Slash, SelfCAD, Clara.io, Giraffe, 3ds Max, Archicad, Revit LT and Lumion.
Some top alternatives to Modo includes Mari, 3D Slash, SketchUp, Adobe Dimension, 3ds Max, Maya, Wings 3D, Cinema 4D and formZ.