Essential Science Indicators allows researchers to: Analyze research performance of companies, institutions, nations, and journals; Identify significant trends in the sciences and social sciences; Rank top countries, journals, scientists, papers, and institutions by field of research; Determine research output and impact in specific fields of research; Evaluate potential employees, collaborators, reviewers, and peers. In-depth coverage with close to twelve million articles from over 12,000 journal titles from around the world; A solid basis for comparison of research performance that includes baselines, which are the benchmarks for assessing research impact; Expert guidance that enhances data which provides editorial comments from scientists and researchers.