BibSonomy is a social bookmarking and publication-sharing system. Developed by Knowledge and Data Engineering Group, University of Kassel, Germany
License: Free
Paperpile is a subscription-based reference management tool that excels in integration with Google Docs and citation management, making it ideal for academic writing. In contrast, BibSonomy is an open-source platform focused on social bookmarking and collaborative sharing, appealing to users who value community-driven resource management.