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Bookends vs BibDesk: catalog facts
Bookends	BibDesk
Paid Commercial software sold through the developer's site.	Free Free and open source.
macOS, iOS	macOS
Imports from many academic databases Citation tools for Word, Mellel and Nisus Writer Pro	Links references to their PDFs and web pages One-click import from Google Scholar, arXiv and PubMed
Mac and iOS only Paid, unlike Zotero	macOS only Built around BibTeX, less suited to Word-based workflows
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.