Portable software is usually packaged into a single executable (.exe) file or folder. It can be stored on an external device like a USB flash drive and launched directly on any compatible Windows computer. The Appeal of Portability

: Software like FreeCAD or LibreCAD offers free, legal drafting capabilities without security risks. Autodesk Fusion for personal use

Users can carry their entire design environment in their pocket and use it on school or work computers.

: A free basic version for viewing, creating, and editing 2D drawings directly in your web browser.

Dassault Systèmes (makers of SolidWorks) offers DraftSight. The free version gives you a classic AutoCAD-like interface (similar to 2007) and works perfectly with .DWG files.

| Software | Best For | Platform | |----------|----------|----------| | | 2D drafting similar to AutoCAD | Windows, Mac, Linux | | FreeCAD | 3D parametric modeling | Windows, Mac, Linux | | LibreCAD | Lightweight 2D CAD | Windows, Mac, Linux | | NanoCAD | Familiar AutoCAD-like interface (free version) | Windows | | QCAD (Community Edition) | 2D technical drawing | Windows, Mac, Linux |

A councilor, surprised by her honesty, asked how she’d produced the drawings. Mina explained: she’d found the files on an old machine and used the licensed key she found with them; she made edits based on community input; she offered to hand the updated files to the city and the original studio’s estate. Legal eyes tracked and frowned, but the spirit of the room had shifted. Photographs of kids rehearsing in the parking lot, petitions with names and times and fingerprints—these mattered more than the age of a program.