Citelighter is a citation management tool that allows students to save, organize, and cite information from both online and offline sources. It has both free and paid versions, with the paid version allowing automatic citation of PDFs and unlimited storage. Citelighter installs as a browser toolbar where users can highlight text, capture citations, and save them to projects. Captured citations are automatically added to a bibliography for each project. The tool simplifies the research process by managing citations and references.