Google - Sketchup Pro 2020

Unlike the modern subscription-only versions (2021–2025), SketchUp Pro 2020 sits in a sweet spot. It still supports the classic (backward compatible to version 2018), runs natively on both Windows and macOS (including Catalina at the time), and doesn't require an annual internet handshake for perpetual license holders.

"Developing paper" in generally refers to one of two distinct workflows: creating 2D documentation (like blueprints) using the bundled LayOut application, or designing physical "papercraft" models by "unfolding" 3D shapes into flat templates for printing. 1. Creating 2D Documentation (LayOut) google sketchup pro 2020