paperclub is Bibby AI’s collaborative annotation tool for research papers. Upload a PDF or paste an arXiv link, highlight passages, leave comments in the margins, and see annotations from other readers. It was previously called PaperFace and PaperSpace.

Can I annotate research papers for free?

Yes. paperclub is free to start. Sign in with Bibby, open the shared library, and annotate papers in your browser. Nothing to install.

How is paperclub different from Hypothesis or Perusall?

paperclub is built for research PDFs and journal clubs: arXiv links, highlight consensus across readers, moderated margin comments, and a shared library next to Bibby’s citation search and paper review tools.

Was this product called PaperFace or PaperSpace?

Yes. PaperSpace became PaperFace, and PaperFace is now paperclub. Links to /products/PaperFace and /paper-space still work.

Annotate research papers together: paperclub | Bibby AI

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