1) Mendeley is free academic software that allows users to organize documents and references, discover statistics and recommendations, and collaborate through groups.
2) It allows users to add documents to their library through dragging and dropping files, importing folders, or manually adding references, and fill in missing document details through lookups.
3) References can be searched, filtered, and cited in Word documents through a citation plugin, which automatically generates in-text citations and bibliographies in the chosen style.