Create an account at Web of Science to access all EndNote Web's premium features. These include
EndNote Web can be used as either a standalone product or as an add on to EndNote Desktop Software.
You can use EndNote web to download citations when away from your home computer and can transfer up to 10,000 reference to EndNote Desktop.
In Endnote Web you are only able to save 10,000 references at a time. EndNote Desktop allows an unlimited amount of references.