These are machine generated, non-selective, and search as many web pages as possible. They're good for unique or specific keywords or topics.
Search Engines
Blog & Social Media Search Engines
Meta-Search Engines - cross-search multiple subject directories and search engines.
Beta, Experimental, New, Specialized - a variety of tools and resources
- Consensus - a search engine that uses AI to find insights in research papers
- Creative Commons
- Dataset Search with Google- discover datasets hosted in thousands of repositories across the web
- Elicit - AI powered search engine connected to Semantic Scholar; automates research tasks like summarizing papers, extracting data, and synthesizing your findings
- Google Books
- Google Images
- Google News
- OAIster - online collections of books, journals, audio, images, movies
- OpenMD - search billions of documents from medical organizations, journals, and databases
- The Infography - professors, librarians, and other scholars recommend the best sources of information about their subjects of expertise
- Internet Archive Scholar - archived open access papers that may no longer be available elsewhere
- iTools - search, language and research tools on one page
- Semantic Scholar - artificial intelligence (AI) powered research tool for scientific literature (see guide)
- TinEye - reverse image search
- WayBack Machine - archived web pages
- WolframAlpha - a computational knowledge engine