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
Colwiz offers robust collaboration and organizational features with a user-friendly interface, making it suitable for teams and projects, but lacks customization and open-source support. Zotero, being open-source, provides extensive community support and customization options, making it ideal for individual researchers and those who need advanced citation management, though it may be overwhelming for beginners.