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
PTC Creo is a powerful CAD software focused on 3D modeling and parametric design, making it ideal for complex engineering projects. In contrast, LibreCAD is a free, open-source tool designed primarily for 2D drafting, making it suitable for simpler design needs.