Sketchup 8 Portable [best] -

Even a stable version like SketchUp 8 Portable has issues on modern Windows 10/11. Here are fixes:

Ultimately, keep SketchUp 8 Portable on your emergency USB toolkit, alongside other classics like Blender 2.79 portable or AutoCAD 2006 portable. You never know when you’ll need to quickly draft a 3D concept on a locked-down PC. sketchup 8 portable

Alternatively, use online converters like skp-converter.com (upload with caution for sensitive files). Even a stable version like SketchUp 8 Portable

: Portable versions are often wrapped in templates that aim to leave no registry traces or temporary files on the host PC after the session ends. Compact Size sketchup 8 portable

Users could run it on school or office computers where they didn't have permission to install new software.