Bookends vs Papis

Bookends is a reference-management app for students and professionals working with research. It collects, organizes, annotates, cites, syncs, shares, and publishes references across macOS, iOS, and a browser extension. The Mac app includes hundreds of searches for scholarly sources and institutional libraries, and can import references and PDFs. Its reader combines PDF annotations, notes, deep links, and searches across reference records and attached file contents. Bookends can scan manuscripts, replace temporary citations, and create in-text citations, footnotes, and bibliographies using built-in or CSL styles. Imports include EndNote XML, RIS, BibTeX, PubMed, and SenteXML, with integrations for Microsoft Word and other listed applications. Bookends Bridge connects browsers to the Mac app. MCP-capable AI assistants can search references, read PDFs, add notes and highlights, locate citations, and create bibliographies. Mac and iOS libraries sync through iCloud and can be shared with colleagues.

Papis is a free, open-source command-line manager for documents and bibliographic records. It stores records in human-readable YAML files and lets users search by fields such as author, title, and tags. Importers can bring data from other bibliography managers and retrieve metadata from sources including arXiv and Crossref. Records can be exported to BibTeX and other formats. The project lists plugins for Vim, Neovim, and Emacs, plus integrations with rofi, dmenu, Zotero, and Firefox. Third-party Python entry-point plugins can add importers and downloaders, and a Python API supports custom scripts. A local web app starts with `papis serve`; the documented address is `http://localhost:8888`. Installation is described through pip, source code, Arch Linux AUR, Nix, and Guix. The project directs questions to GitHub Discussions and bugs to GitHub Issues. If no importer exists for a website, users may need to download its PDF and enter metadata manually.