The deep thinkers approach to OSINT. What if all you had was a search engine? A complete and total focus on observable evidence linked by inferences.

DataPortals.org is the most comprehensive list of open data portals in the world. It is curated by a group of leading open data experts from around the world - including representatives from local, regional and national governments, international organisations such as the World Bank, and numerous NGOs.

Magazine article search engine and categorization covering magazines from many publishers.

A Google alternative safe search engine for students offering information and reference sites: art, social sciences,social issues,social problems, history, biography, magazines, newspapers,encyclopedias,science, math, chemistry, biology, and dictionaries.

Start your literature search here: get an overview of a research topic, find relevant papers, and identify important concepts.

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Find what you want in a library near you with WorldCat, a global catalog of library collections.

DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.

Wolfram|Alpha brings expert-level knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels.

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Scientific Literature Digital Library incorporating autonomous citation indexing, awareness and tracking, citation context, related document retrieval, similar document identification, citation graph analysis, and query-sensitive document summaries. Advantages in terms of availability, coverage, timeliness, and efficiency. Isaac Councill and C. Lee Giles.

More than 200 mio. scientfic documents from more than 8000 content providers. BASE is one of the world's most voluminous search engines for academic web resources.