ZOTERO is an application that allows you to save your research from library catalogs, research databases, and websites, all with a single click. It collects your research in a personal "library." Your library can be organized into folders according to your papers and projects. You can add notes to items saved in your library. You can save documents in PDF directly into your library. You can export footnotes and bibliographies from your library, in Turabian format, into a word document.
All of your research is automatically backed up to the cloud and saved for later use, and the app on your computer is accessible even when you are offline.
ZOTERO is free!
The twentieth-century tool for writers was the typewriter; its twenty-first-century counterpart is the word processor. In the same way, if a twentieth-century tool for researchers was the index card scribbled with citation notes, its twenty-first-century equivalent is a reference manager like Zotero. It is a personal digital library for the modern researcher: searchable, adaptable for a range of individual needs, sharable, and available online and offline.
Jason Puckett, Zotero: A Guide for Librarians, Researchers and Educators, 2nd ed. (Chicago: Association of College and Research Libraries, 2017), 1.