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 an open-source reference management tool that excels in customization and collaboration, suitable for users who prefer a free solution. In contrast, Papers offers a more polished user experience and powerful PDF capabilities but operates on a subscription model, making it a better choice for those willing to invest in their research tools.