These organizations or initiatives (listed alphabetically) have formally adopted the POSI principles by publishing an initial self-audit, and committed to routinely demonstrating evidence of following POSI in practice.
| Organization | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|
| 1. CLOCKSS | 2024-September-10 | ||||||
| 2. CORE | 2022-May-23 | ||||||
| 3. COUNTER | 2024-May-30 | ||||||
| 4. Crossref | 2020-December-02 | 2022-March-08 | 2024-December-07 | ||||
| 5. DataCite | 2021-August-30 | 2026-March-04 | |||||
| 6. DOAJ | 2022-October-06 | 2025-October-20 | |||||
| 7. Dryad | 2020-December-08 | ||||||
| 8. Europe PMC (EMBL-EBI) | 2022-February-21 | 2024-February-26 | |||||
| 9. HAL+ (CNRS) | 2024-November-28 | ||||||
| 10. JOSS | 2021-February-14 | ||||||
| 11. Liberate Science | 2022-August-02 | 2023-November-14 | |||||
| 12. Matilda | 2026-March-04 | ||||||
| 13. OAPEN and DOAB | 2023-May-04 | 2025-December-23 | |||||
| 14. OA Switchboard | 2021-October-07 | ||||||
| 15. OpenAIRE | 2022-March-29 | 2026-January-13 | |||||
| 16. OpenAlex (formerly OurResearch) | 2021-June-10 | 2026-March-30 | |||||
| 17. OpenCitations | 2021-August-09 | ||||||
| 18. OPERAS | 2024-September-25 | ||||||
| 19. Peer Community In | 2024-April-11 | ||||||
| 20. Public Knowledge Project | 2024-May-28 | ||||||
| 21. Rogue Scholar | 2025-October-20 | ||||||
| 22. ROR (CDL, Crossref, DataCite) | 2020-December-16 | 2026-March-27 | |||||
| 23. Royal Repository of Innovation and Studies | 2025-October-17 | ||||||
| 24. Sciety (eLife) | 2021-November-22 | ||||||
| 25. SciPost | 2024-March-11 | ||||||
| 26. Thoth Open Metadata | 2026-Feb-26 | ||||||
| 27. World Data System | 2026-Feb-01 PDF |