SFX is the original, award-winning context-sensitive link server from Ex Libris™. SFX allows context-sensitive linking between Web resources in the scholarly information environment. OpenURL-compliant, SFX accepts an OpenURL as input from an information resource, which is referred to as an SFX source.
OpenURL Referrer is a browser extension that can take certain kinds of citations on the web and convert them to direct links to one of your local library's databases. This can be accomplished thanks to OpenURL