The web browser version of EndNote can be used to create bibliographies, manage references, share libraries collaboratively, and insert citations into Word via Cite While You Write. It can be used as a standalone library (though it's not a real substitute) or as a way of transferring references from desktop EndNote if you are using more than one computer.
Sign up for a free account via 'Preferences' menu in Endnote desktop to get unlimited storage
Inserting references into Word
No software has to be installed to use EndNote Web however you will need to install a Cite While You Write toolbar if you want to insert references into a Word document or use the capture toolbar in your browser. After creating an account, signing in and viewing the 'Getting started' guide, select the "Download installers link at the bottom of the page". Please read the Endnote Web Plug-In installation instructions.
Using EndNote Web tips