Connotea

Connotea was a free online reference management service for scientists, researchers, and clinicians, created in December 2004 by Nature Publishing Group and discontinued in March 2013. It was one of a breed of social bookmarking tools, similar to CiteULike and del.icio.us, where users can save links to their favourite websites. ReadCube is a similar free service that offers storage, annotation and sharing tools specifically for scientific documents.

Connotea

Connotea was a free online reference management service for scientists, researchers, and clinicians, created in December 2004 by Nature Publishing Group and discontinued in March 2013. It was one of a breed of social bookmarking tools, similar to CiteULike and del.icio.us, where users can save links to their favourite websites. ReadCube is a similar free service that offers storage, annotation and sharing tools specifically for scientific documents.