Search engines, meta-search engines and directories

Academic search engine that also allows you to search by knowledge area and to find lists of authors, journals and conferences. Science outreach journals are included in its results. It offers advice on search criteria with semantic markup. Once a search is complete, you can filter results.

Search engine for articles and academic publications that allows you to carry out an advanced search. If you have a Google profile you can save your results and carry out a follow-up of your publications and citations.

Database specialized in education offering access to more than 1.4 million bibliographic records of journal articles, books, conference papers, and other materials related to education.

A free search engine that helps people find and understand papers in the Unpaywall database. Unpaywall is an open database of 20M free scholarly articles, harvested from 50,000 publishers and repositories.

Extensive bibliographic database on economics and finance compiled by the Federal Reserve Bank of Saint Louis, Missouri, in the United States. It allows you to navigate by document type and to identify authors, institutions and other key players in the field of economics.

Health resource directory and search engine with specific search engines for finding resources on specific subjects such as toxicology or rare diseases. There are search engines for audiovisual or image format.

Subject gateway in the field of applied and life sciences that has a North American and Anglo-Saxon scope. Despite this specific territorial scope, the meta-search engine indexes the catalogues and archives of science research and outreach centres from all over the world.

Database of scientific repositories that prioritizes the Latin American territorial sphere and focuses mainly on mathematics, physics, technology, biology and medicine. It also includes arts and humanities.