Article Sciences
- http://articlesciences.inist.fr/
- Scientific article search and order engine, a service provided by Institut de l'Information Scientifique et Technique (INIST) of Centre National de la Recherche Scientifique (CNRS), France.
GoPubMed
- http://www.gopubmed.org
- Knowledge-based search engine for biomedical texts. It allows users to identify experts in the biomedical field.
ISI Highly Cited
- http://isihighlycited.com/
- A search tool to identify individuals, departments and laboratories that have made fundamental contributions to the advancement of science and technology in recent decades.
Science-advisor.net
- http://www.science-advisor.net
- Scientific search engine and online forum. Researchers and students can search the scientific literature and can freely and anonymously discuss and review research articles.
VADLO
- http://vadlo.com
- Biology and medical search engine and biology research cartoons.
iSpecies
- http://darwin.zoology.gla.ac.uk/~rpage/ispecies/
- A species search engine from Rod Page of Glasgow University. Search on either the common or Latin name of a species. Results are generated by querying other data sources.