Pepakura Designer - Pepakura Designer allows you to easily create papercraft models from 3D data you create from your...
KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
Ultimate Papercraft 3D - Ultimate Papercraft 3D is a standalone software for creating papercraft from 3D models.
Fritzing - Fritzing is an open-source initiative to support designers, artists, researchers and hobbyists to...
Ultimate Unwrap 3D - Ultimate Unwrap 3D is a standalone UV mapping software for unfolding and unwrapping 3D models.
LTspice - LTspice® is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models for easing the simulation of analog circuits.