Papers is desktop electronic library and document organizer. The tool helps users organize documents in many formats, including PDF, MS Word, spreadsheets, presentations, posters, and scanned text. Papers includes dedicated space for users' articles and conference related materials, such as travel documents and posters. It includes a citation tool and a built in search engine. The search engine allows lexical and categorical searching using both free and fee-based search engines, and the subsequent importation of documents into the user's library.