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Scholar Inbox vs alphaXiv: catalog facts
Scholar Inbox	alphaXiv
Free Free to use.	Free The homepage lists no prices; signing up adds following and discussion.
Web	Web, Browser extension
Personalized recommendations rather than a raw feed Daily coverage of arXiv, bioRxiv, medRxiv and ChemRxiv	Trending papers with summaries and discussion Follow specific authors and organizations
Limited to the preprint servers and proceedings it indexes Recommendations need time to learn your interests	Focused on arXiv papers Discussion features require an account
Web application	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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