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
SketchPort offers a collaborative platform with a focus on vector drawing, making it suitable for design teams. In contrast, LibreCAD is a lightweight, open-source tool ideal for 2D drafting, but it lacks advanced features found in more comprehensive CAD software.