- Google Scholar looks for scholarly literature
- ResearchGate find and share research
- Base-search looks for scholarly literature.
- Google Books searches the full text of books and magazines
- DOAJ provides access to high quality, open access, peer-reviewed journals.
- USA.gov is an online guide to US government information and services.
- Science.gov is the gateway to the U.S. Federal Science
- PubMed comprises more than 28 million citations for biomedical literature from MEDLINE, life science journals, and online books.
- Ayush Research Portal provides Ayurvedic evidence based research data.
- Dhara is an online index of articles on Ayurveda published in research journals worldwide.
- CCRAS, the Central Council for Research in Ayurvedic Sciences promotes scientific research on Ayurveda
- Sweetsearch is for students: it searches only authoritative sites.
- CiteSeer is a public search engine primarily in the fields of computer and information science.
- BlogSearchEngine.org is the source for blogs and other social media.
- Flickr provides online photo management and sharing application
- Twitter search is the advanced search for Twitter
- NewsNow is one stop shop for news.
- US newspapers finds US newspapers by state
- Dailymotion allows to explore and watch videos online
- Advanced Google search allows to refine search
- DuckDuckGo blocks advertising trackers, keeps search history private, takes control of personal data.
- Yippy clustering search engine allowing users to navigate big data sets by topical categories dynamically.Offers free text AND on the fly-directory
- MyAllSearch is a multi metasearch
- Dogpile best search engines piled into one.
- Dothop is a visual search engine
- Zanran finds statistics on the web
- Faganfinder is a meta search engine of search engines. Specify for example quotes.