SciTopics is a free, wiki-like knowledge-sharing service for the scientific community. It offers distilled, authoritative and up-to-date information for researchers on scientific, technical and medical topics.
Scopus is the largest abstract and citation database of science research literature and quality web sources. http://www.scopus.com
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NextBio is the provider of an innovative platform that enables researchers in the life sciences, health sciences and chemistry to search, discover and share knowledge locked within public and proprietary data. http://www.NextBio.com Publishing from 1995 and excluding major reference works.
Reaxys is Elsevier's workflow solution for research chemists. Reaxys contains an extensive repository of experimentally validated data that chemists need including structures, reactions (including multi-step reactions) and physical properties. Now chemists can get relevant data not found elsewhere, drawn from source publications carefully selected for their importance and relevance to synthetic chemists. http://www.reaxys.com
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PANGAEA is operated as an Open Access library aimed at archiving, publishing and distributing georeferenced data from earth system research. http://www.pangaea.de/
ThermoML — an XML-based IUPAC Standard for storage and exchange of experimental thermophysical and thermochemical property data. http://trc.nist.gov/ThermoML.html Data Files Journal of Chemical & Engineering Data The Journal of Chemical Thermodynamics Fluid Phase Equilibria Thermochimica Acta International Journal of Thermophysics