EndNote Web is not as robust as the desktop version, but getting better It is free for basic citation management, but you will need the full version of EndNote to attach files to your citations, have access to output styles and larger storage space. It is fully capable of saving up to 25,000 references and, with its own Cite while you Write, helping format your papers. Many people start using the desktop version of EndNote, and use EndNote Web to sync their citations over mutliple devices and access them when not at a computer with EndNote installed.
Note: EndNote Web has a 2 year limit of access when you purchase a new version of EndNote software, after that period you will not have access to all its features until you upgrade your software.
EndNote Web is usually accessed from within the Web of Knowledge search interface. But it can also be accessed directly from www.myendnoteweb.com, using your Web of Knowledge login and password. You must be on campus the first time you register.
You can sync your EndNote and EndNote Web databases using the sync tools within EndNote. This will merge your data from EndNote and EndNote Web. In EndNote X7, syncing between your online and desktop versions happens automatically.
Syncing in older versions of EndNote can ocassionally be buggy. If you are having trouble syncing, you may want to export your EndNote database and then upload it to EndNote Web.
EndNote Web Toolbar
Even if you don't use EndNote Web, you might want to download the EndNote Web download installers, located under the Options tab. You can install a "Capture Reference" bookmarklet for your browser, or a more full featured Firefox plugin.