LibreCAD is a free Computer-aided design (CAD) application for 2D design. It works on Linux, OS X, Unix and Windows operating systems. Developed by Ries van Twisk
License: Open Source
ArchiCAD is a powerful BIM software tailored for architects, offering advanced 3D modeling and collaboration tools, but comes with a higher cost and learning curve. In contrast, LibreCAD is a free, open-source 2D CAD application that is user-friendly and suitable for basic drafting but lacks the advanced features found in ArchiCAD.