Neither 3D Slash nor Planoplan offers a free trial.
3D Slash is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Planoplan is designed for Large Enterprises, Medium Business and Small Business.
Pricing for 3D Slash Starts at $2/Month whereas for Planoplan Starts at $10/Month.
Some top alternatives to 3D Slash includes Vectary, CL3VER, SelfCAD, Clara.io, Strata Sculpt 3D, SketchUp, 3ds Max, Blocks and Spline.
Some top alternatives to Planoplan includes Infurnia, Planner 5D, Foyr Neo, HomeByMe, Sweet Home 3D, Live Home 3D, Space Designer 3D, REimagine, Qualified, Workvivo and IFTTT.