: A browser-based version available via AutoCAD Web . LibreCAD : A free, open-source 2D CAD application.

: Native to Windows XP; requires "Compatibility Mode" to run on Windows 10 or 11.

: The main application file modified to run from a USB drive or local folder.

For AutoCAD 2005, a portable version was created by some third-party developers, which allowed users to carry the software on a portable device and use it on multiple computers. However, I couldn't find any official confirmation from Autodesk about an official portable version.

Autocad 2005 is a 2D and 3D CAD software developed by Autodesk, a well-known company in the field of computer-aided design. Released in 2004, Autocad 2005 was a significant upgrade to the previous version, featuring improved performance, new tools, and enhanced functionality. The software is widely used by architects, engineers, drafters, and designers to create, edit, and manage 2D and 3D models.

AutoCAD 2005 Portable represents a specific era in software history where user demand for mobility outpaced official product offerings. While it provided a workaround for on-the-go drafting, modern cloud-based tools from Autodesk Support