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. Developed by George Mason University
License: Open Source
Zotero is a free, open-source reference manager that excels in PDF management and collaboration, making it suitable for academic use. In contrast, Paperpile is a subscription-based tool tightly integrated with Google services, offering a more user-friendly experience for those who work primarily within the Google ecosystem.