http://www.meetup.com/GoodCodersNYC/

This is the group of people uses technology to transform lives in a good way. When we meet, we will try to solve technical challenges faced by some of the non-profits, and help build them better tools with higher visibility to interact with the society. We could certainly build on that idea you already have. This group is not only for people who can create tools, but for those who have felt they have an idea/skills to create something new which could change the way non-profits should be.