Mozilla has about 200 employees spread around the world. They work from big campuses like the one in Mountain View, California, small offices in places like Beijing, and out of their homes in faraway locations like Dunedin, New Zealand and Singapore. However, most of the people working on Mozilla products don’t work for Mozilla. At the last conference for Mozilla developers there were two volunteers for every Mozilla employee.
At Mozilla there is an overwhelming amount of communication options. Project members have the choice of email lists, newsgroups, blogs, wiki pages, and more, but more than anything else the company runs on IRC. IRC helps all of the developers stay connected with each other, their community, and their customers.