Organizations list in Physicsweb
ACS (American Chemical Society) links to chemistry.org
AIP (American Institute of Physics)
APS (American Physical Society)
CERN (Conseil Européen pour la Recherche Nucléaire)
CECAM (European Centre for Atomic and Molecular Computations)
EPS (European Physical Society)
IoP (Institute of Physics)
NASA
NIST (National Institute on Standards and Technology)
Nobel e-Museum
RSC (Royal Society of Chemistry)