For paranoid professionals, the safest route is to build your own portable repack from a legitimate DraftSight installer.
DraftSight, developed by Dassault Systèmes, has established itself as one of the most robust free and professional 2D CAD alternatives to AutoCAD. However, its native installer requires administrative rights, writes deeply into the Windows registry, and lacks native portability. This is where the "repack" community steps in, transforming the standard DraftSight into a lightweight, portable powerhouse. draftsight portable repack