CORE research papers search

    https://core.ac.uk/

    “The world’s largest collection of open access research papers” we could not describe better.

    207+ million of them.

    Sortable by language and other criteria. You’ll get a pdf of the original source, either an abstract or full text.

    Provides also an API to conduct any automatic search or statistics over any of your topics.

     

    Free, No registration, No Download/Install required