If you absolutely need offline, portable 3D modeling, consider or Wings 3D – both are modern, free, and safe.
This is the most critical section. Many websites offer portable versions, but not all are trustworthy. Google Sketchup 8 Portable Free Download
When Google owned SketchUp, the End User License Agreement (EULA) allowed for a free version ("Google SketchUp") and a paid version ("SketchUp Pro"). However, the rights to the software were transferred to Trimble. While Trimble has generally allowed the use of legacy versions for existing license holders, redistributing the software—especially modified "portable" versions—violates the Terms of Service (ToS). If you absolutely need offline, portable 3D modeling,
Modern Windows versions (10 and 11) may require "Compatibility Mode" to run version 8 smoothly. How to Get SketchUp Safely Today If you absolutely need offline