Citation metadata, including citation counts can be accessed through the Scopus/ScienceDirect API
The Library, in collaboration with Chicago Booth and the Social Sciences Division, has purchased structured XML data of the entire Web of Science database from 1900 - 2023. This can be downloaded for analysis on your own computer.
Additional information can be found in the XML Users Guide
EBSCO databases allow researchers to download up to 25,000 citations at a time. This can only be done from a results screen and does not allow you to select individual articles. Note that this is only the citation information and not the full text of the articles. It does include abstracts, in most cases.
​Follow these steps
The entire PubMed bibliographic database can be downloaded for local use or accessed via API. This is citation and abstract information only, not the text of the cited articles.
Learn more at the National Library of Medicine site.