Zotero is a free software and cloud-based tool that stores, organizes, and shares resources. Zotero takes all kinds of items including:
snapshots of websites
documents (Word docs, PDFs, etc.)
audio and video files
Why Bother With Zotero?
While researching, it can be hard to organize your materials. Zotero lets you start building your own research library, categories, tag, and make notes on items you may want to use, then export and cite them in your paper or projects.