We just launched: http://forum.formlabs.com
Formlabs is a fast-growing startup in Somerville, MA, inventing next-generation, stereolithography-based 3D printers. Our Community Forum is for people to find help and support, as well as showing off cool projects.
Very happy with Discourse so far. We successfully wrote a migration script to get posts and users out of the old Zendesk forum, and also implemented custom Single Sign-On with our online store.