Flamenco Search is a downloadable web-based interface from the UC Berkley School of Information based in Python, designed to run on a server. It streamlines the browsing of large collections. It is particularly valuable for items such as documents or images, enabling website visitors to explore content via a hierarchy of categories and subcategories called facets. Users can assign keywords and metadata which is then used to guide site visitors to the choices that best meet their interests, while allowing them to refine or expand their query and remain oriented in relation to the rest of the collection.