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Connected PapersSciSpace
Freemium

Usable in the browser; check the site for current plan limits.

 Freemium

Free sign-up, with paid plans for more usage and enterprise options.

Web Web
  • Visual graph of related papers instead of a plain result list
  • Helps discover related work from a single starting paper
  • Search across more than 280 million papers
  • Chat with PDF to explain difficult papers
  • Web only, needs an internet connection
  • Plan limits are not described on the homepage
  • AI summaries of papers still need checking against the source
  • Full features require a paid plan
Web application Web application
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Account needed
Needs internet Needs internet

Checked September 23, 2026

Checked September 23, 2026

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