Not software as such but some posters that I put together to encourage the girls in my all girls school to give serious thought to Design, Technology and Engineering. The women in these posters did so much to challenge the nonsense view that designing and making things is an exclusively male occupation.
The posters are in .PDF format but the original files will be (I'm currently struggling with Joomla) included in their native .SVG format. They were created in Inkscape. You are welcome to use them for any non-profit purpose (when I get them out there).