Over the past couple years, I've been developing a Customer Relationship Management app (CRM) for hackerspaces, and it's now ready to release into the wild! Meet Seltzer CRM!
Seltzer CRM is an open source (GPL) CRM web app for hackerspaces. It's based on the LAMP stack, and has been in use at i3 Detroit for a couple years, growing with us to our current level of 75 members.