very good CAD software
Simple, pragmatic enterprise architecture for the mobile
Simple and intuitive 2D vector drawing for electronics and not only.
Renders glycans and glycopeptides with frag. info using SNFG format
Madeline 2.0 Pedigree Drawing Engine (PDE)
ARO helps physically disabled students to create mathematical drawings
A drawer for origami crease pattern
dedalo is a 2d cad drawing software written in python3.