Add Your Links To Search Engines and Knowledge Bases

David Trammel's picture

I saw this list of search engines and knowledge base websites. Add any that you've come across to this thread. - Academic Resource Search. More than a billion sources: encyclopedia, monographies, magazines. - a search for the contents of 20 thousand worldwide libraries. Find out where lies the nearest rare book you need. - access to more than 10 million scientific documents: books, articles, research protocols. is a library of scientific bioscience journals published in developing countries. - volunteers from 102 countries have collected almost 4 million publications on economics and related science. is an American state search engine on 2200+ scientific sites. More than 200 million articles are indexed. is one of the most powerful researches on academic studies texts. More than 100 million scientific documents, 70% of them are free. is a database of sheet music and scores.