Web of Science is the highest level research platform.
About 21,200 selected journals (as of September 2019) can be searched, analyzed, and shared in this platform.
You can examine frequency of citation of literatures and development of researches from cited papers.
Web of Science enables to connect various data with fast and easy way.

Number of the Journals for each field
・Humanities: 1,828
・Social Science: 3,428
・Natural sciences: 9,258
・Emerging sources: 7,787

Records of journal information
・The field of humanities: 1975 – Present
・The field of natural sciences: 1900 - Present
・The field of social sciences: 1900 – Present
・The field of Emerging sources: 2015 – Present

Records of reference information
・The field of humanities: 1975 – Present
・The field of natural sciences: 1900 - Present
・The field of social sciences: 1900 - Present
・The field of Emerging sources: 2015 – Present

Following content“Citation Connection”was added. （2015/3）
What is "Citation Connection" ?

• Book Citation Index 2005 - Present
• Current Chemical Reactions 1995 - Present
• Index Chemicus 1995 - Present
• Data Citation Index 1995 - Present
• Current Contents Connect 1998 - Present
• BIOSIS Citation Index 1995 - Present
• Zoological Records 1995 - Present
• Medline 1995 - Present
• Derwent Innovations Index 1995 - Present