The Web of Science first launched online, bringing together the SCI, SSCI and AHCI in 1997. Web of Science (formerly known as Web of Knowledge) was the first bibliographic DB, which was founded by Eugene Garfield in 1960s as the Institute for Scientific Information (ISI) and during the acquisition by Thompson Reuters company in 1992 ISI received its current name—Web of Science (abbreviated as WoS).It is currently owned by Clarivate. Its Core Collection database is a selective citation index of scientific and scholarly publishing covering journals, proceedings, books, and data compilations. Scopus is Elsevier's abstract and citation database launched in 2004. Its an abstract and indexing database with full-text links owned by Elsevier company. Presently it boasts of 90 million + content records. Scopus is a large, multidisciplinary database of peer-reviewed literature: scientific journals, books, and conference proceedings. It appears that Web of Science covers substantially fewer journals compared Scopus. One common problem for both Web of Science and Scopus is simply that neither resource is available researchers. Its apparent that the newcomer had surpassed the veteran.