Web of Knowledge is described as 'Thomson Reuters Web of KnowledgeSM is a research platform that gives you access to objective content and powerful tools to search, track, measure and collaborate in the sciences, social sciences, arts, and humanities' and is an website in the education & reference category. There are more than 10 alternatives to Web of Knowledge, not only websites but also apps for iPhone and Windows. The best Web of Knowledge alternative is Google Scholar, which is free. Other great sites and apps similar to Web of Knowledge are ResearchGate, Semantic Scholar, Curasynth and Scinapse.