CERN Document Server (CDS): CERN Library Catalogue
INSPIRE-HEP is an open access digital library for the field of high energy physics
The SAO/NASA Astrophysics Data System (ADS) is a digital library portal for researchers in astronomy and physics, operated by the Smithsonian Astrophysical Observatory (SAO) under a NASA grant.
arXiv is an open-access repository of electronic preprints and postprints approved for posting after moderation
Conference Management Software (COMS)