Benubird PDF is a document organizer with support for tags and collections.

Docear is an academic literature suite. Docear bundles several applications for academics. As of now, these applications are BibTeX based reference management…

JabRef is a reference management software that uses BibTeX and BibLaTeX as its native formats and is therefore typically used for LaTeX.

Paperpile is a web-based reference management software, with special emphasis on integration with Google Docs and Google Scholar.

Qiqqa is award-winning research management software, designed for commercial and academic researchers.

Zotero is a powerful, easy-to-use research tool that helps you gather, organize, and analyze sources and then share the results of your research.

colwiz (collective wizdom) is free web, desktop and mobile based research management software.

EndNote is a commercial reference management software package, used to manage bibliographies and references when writing essays and articles.

Mendeley is a free reference manager and an academic social network.

Papers helps you collect and curate the research material that you're passionate about.

ReadCube is a desktop and browser-based program for managing, annotating, and accessing academic research articles.