ScopusScopus is the largest abstract and citation database of peer-reviewed literature and quality web sources with smart tools to track, analyze and visualize research.
Scopus offers researchers a quick, easy and comprehensive resource to support their research needs in the scientific, technical, medical and social sciences fields and, more recently, also in the arts and humanities. As of December 2010, Scopus included more than 41 million records (70% with abstracts) from nearly 18,000 titles from 5,000 publishers worldwide. Scopus also offers tools to compare journals, authors, research areas, etc.
In comparison to Web of Science, Scopus has a bigger scope (aprox. 18,000 titles compared to aprox. 12,000 titles), but Web of Science is more complete when it comes to citations prior to 1996. Scopus doesn't use the JIF, but rely on other bibliometric tools such as SJR and SNIP. Another difference is that Scopus covers articles in press.
Scopus is part of Elsevier's SciVerse platform, which also includes ScienceDirect and SciVerse Hub. Through SciVerse Hub it is possible to cross search all ScienceDirect and Scopus content together with Scirus. SciVerse Hub also contains a methods search.