2D computer-aided design (CAD) tool
Download from PortableApps.com
LibreCAD Portable can run from a cloud folder, external drive, or local folder without installing into Windows. It's even better with the PortableApps.com Platform for easy installs and automatic updates.
LibreCAD is a fully comprehensive 2D CAD (computer-aided design) application that you can download and install for free. It has support for over 20 languages and a vibrant community of developers and users around the world.