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UniProt
Data exposed: a large life sciences data set about proteins and their function. -
YAGO
YAGO3 is a huge semantic knowledge base, derived from Wikipedia WordNet and GeoNames. Currently, YAGO3 has knowledge of more than 10 million entities (like persons,... -
UMBEL (Upper Mapping and Binding Exchange Layer)
A lightweight, reference structure of 28,000 subject concepts for the Web. UMBEL is jointly developed and maintained by Structured Dynamics LLC and Ontotext AD. There is a total... -
OpenCyc
About Now it is even easier to use the rich and diverse collection of real-world concepts in OpenCyc to bring meaning to your semantic web applications! The full OpenCyc...