Google Sketchup is a free software application. It’s an excellent way to create 3D models, or to help with layout for exhibitions, stage or even office.
Sumac is the easiest, most customizable and cost-effective software for managing non-profit data.
TechSoup is a charity that facilitates software donations and discounts by acting as a go between donor corporations and registered charities and non-profits. Their partners include Microsoft, Symantec, Adobe, Cisco, and many others.