Some educational institutions and hobbyists still use old copies legally (with valid licenses), but the “portable” modifier nearly always indicates an illegitimate copy.
A “portable” version of software is designed to run from a USB drive or a folder without formal installation — no registry entries, no start menu shortcuts, and (in theory) no traces left on the host computer. Some educational institutions and hobbyists still use old
The string "google sketchup pro 2015 15 2 687 portable" refers to a specific, historical version of the popular 3D modeling software, SketchUp Pro 2015 (version 15.2.687) no start menu shortcuts