ACM: Association for Computing Machinery "the world's first educational and scientific computing society."

American Association for the Advancement of Science

American Institute of Biological Sciences

American Institute of Physics

American Mathematical Society

American Society for Information Science and Technology

Human Factors and Ergonomics Society

International Society for the Systems Sciences

MathSciNet - American Mathematical Society - Mathematical Reviews on the Web

NIST - National Institute of Standards and Technology - USA

NRC.ca - National Research Council, Canada

PARC User Interface Research Group

Public Library of Science

Semantic Web Science Association (SWSA)

SIAM Society for Industrial and Applied Mathematics