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Unpaywall: Open Access Infrastructure for Science

Unpaywall is a nonprofit creating a comprehensive, accurate index of open access content, with 223,859 active users. It provides a reliable source for open access articles, with plans for impact, sustainability, and growth. Unpaywall integrates Crossref, Green OA, and publisher-hosted OA data, offering open-source tools and accurate OA links comparable to Google Scholar. The platform is widely used by academic services and libraries, focusing on financial and moral sustainability with future plans for enhanced OA support and analytics.

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Unpaywall: Open Access Infrastructure for Science

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  1. A nonprofit that builds infrastructure for Open Science.

  2. A rad browser extension?

  3. The Unpaywall browser extension has 223,859 active users

  4. But Unpaywall isn’t a browser extension.

  5. Unpaywall is this.

  6. A complete, open, and accurate index of open access.

  7. Unpaywall is 1. Complete 2. Open 3. Accurate

  8. Unpaywall is 1. Complete 2. Open 3. Accurate Resulting in 4. Impact 5. Sustainability 6. Big Plans

  9. Unpaywall is 1. Complete 2. Open 3. Accurate Resulting in 4. Impact 5. Sustainability 6. Big Plans

  10. Unpaywall is 1. Complete • Crossref • Green OA • Publisher-hosted OA

  11. Unpaywall is 1. Complete • Crossref • Green OA • full list of repositories • unreliant on metadata • determines version and license • fuzzy-matches to link articles • Publisher-hosted OA

  12. Unpaywall is 1. Complete • Crossref • Green OA • Publisher-hosted OA • direct assessment • Crossref OA metadata • DOAJ

  13. Unpaywall is 1. Complete 2. Open 3. Accurate Resulting in 4. Impact 5. Sustainability 6. Big Plans

  14. Unpaywall is 2. Open • Open Source • Open Data • Open Integrations

  15. Unpaywall is 2. Open • Open Source • Open Data • full snapshot • API • Open Integrations

  16. Unpaywall is 2. Open • Open Source • Open Data • Open Integrations • simple query tool • link resolvers • search engines

  17. Unpaywall is 1. Complete 2. Open 3. Accurate Resulting in 4. Impact 5. Sustainability 6. Big Plans

  18. Unpaywall is 3. Accurate • 98% precision. Mechanical Turkers help make sure our OA links are legit. • 82% recall. Turkers check to see if Google Scholar finds things we don’t. • Compares well to Google Scholar

  19. Martín-Martín, A., Costas, R., van Leeuwen, T., & López-Cózar, E. D. (2018). Evidence of Open Access of scientific publications in Google Scholar: a large-scale analysis. arXiv preprint arXiv:1803.06161. Unpaywall OA coverage is comparable to Google Scholar

  20. Unpaywall is 1. Complete 2. Open 3. Accurate Resulting in 4. Impact 5. Sustainability 6. Big Plans

  21. Resulting in 4. Impact • Used by all major academic discovery services. • Used in over 2,000 libraries. • Used in large-scale policy assessment

  22. Unpaywall is 1. Complete 2. Open 3. Accurate Resulting in 4. Impact 5. Sustainability 6. Big Plans

  23. Resulting in 5. Sustainability • Financial sustainability: • Staying small: ant not lion • Unpaywall Data Feed • “Moral sustainability”: involvement in community-based open infrastructure projects

  24. Unpaywall is 1. Complete 2. Open 3. Accurate Resulting in 4. Impact 5. Sustainability 6. Big Plans

  25. Resulting in 6. Big Plans • better support for OA analytics • policy • compliance tools • subscription decision-making • beyond DOI • including other open metadata

  26. Unpaywall is 1. Complete 2. Open 3. Accurate Resulting in 4. Impact 5. Sustainability 6. Big Plans

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