BarCamp

 BarCamp  is an open structure for creating and organizing user-generated conferences focused on whatever subject(s) the organizers and attendees decide.

See:
 * http://barcamp.org/
 * https://en.wikipedia.org/wiki/BarCamp

Diversity
Many resources helping conference organisers to increase the diversity of speakers/attendees don’t easily map to barcamp structures. Here are some resources explicitly for barcamps/“unconferences”:


 * How to Design a Conference for Equity and Learning