Several legal, portable-ready CAD programs exist that can open and edit DWG files:
: Portable versions are often incomplete and may experience frequent crashes, especially on modern operating systems like Windows 10 or 11. Legitimate Ways to Access AutoCAD autocad portable 2012 64 link
Downloading AutoCAD from unofficial sources through "portable links" carries significant risks: Several legal, portable-ready CAD programs exist that can
A portable version of software is generally a "standalone" file that runs directly without modifying the system registry or requiring a standard installation process. However, AutoCAD was not designed to be portable. autocad portable 2012 64 link