While there is no version officially titled "AutoCAD Free Software 20," this likely refers to seeking free ways to access or modern equivalents.
Autodesk offers a web-based version of AutoCAD. While the full "Web" subscription costs money, there is often a or "Web Lite" features available through an Autodesk account.
: A completely free, open-source 2D CAD application. It is lightweight and works on Windows, macOS, and Linux.