EndNote is a citation management tool to collect and organize citations and full text.
Interacting with MS Word, or Google Docs v21, EndNote's Cite While You Write tracks in-text citations and creates a bibliography in real time, saving hours when writing and re-writing papers. EndNote Desktop 21 and 20 versions are covered in this guide.
EndNote 21 Desktop offers access to Endnote Web.
Compare EndNote 21
What's New in EndNote X21 (video)
EndNote (Desktop) Training Guide - from the producer, Clarivate Analytics