An unconference, also known as a barcamp or librarycamp, is an informal gathering where participants actively discuss topics of interest. The agenda is set on the day of the event by attendees, and there are typically no keynote speakers. Unconferences aim to maximize participation through an open format and low-cost or free admission. They originated from "open space technology," which begins discussions without a formal predetermined agenda. Planning an unconference requires finding a theme, venue, date, and volunteers to help organize and spread the word. The casual nature of unconferences encourages sharing ideas through open-ended questions and discussions.