very good CAD software
A simple LaTeX {picture} drawing tool
Drawing, graphics conversion, software development, administration.
2D CAD for precise drawing
a race scenario drawing tool
Vector drawing program for LaTeX using PSTricks
Simple and intuitive 2D vector drawing for electronics and not only.
Syntax Tree Drawing Software (Linguistics)
Free drawing software for Windows, Mac OS X, and Linux
dedalo is a 2d cad drawing software written in python3.
Vector based drawing software designed for RPGs