This list grows as we ingest more of the record. It will never be complete, and we say so.
| Source | Type | Items | Last updated |
|---|---|---|---|
| Europe PMC | Open-access journal articles | 147,069 | 2026-10-01 |
| OpenAlex | Open-access journal articles | 26,163 | 2026-10-03 |
| Source | Type | Items | Last updated |
|---|---|---|---|
| Internet Archive | Digitised books, journals and pamphlets | 4,470 | 2026-09-21 |
| Project Gutenberg | Public-domain books | 242 | 2026-09-14 |
| Wikisource | Transcribed public-domain texts | 20 | 2026-09-14 |
| Source | Type | Items | Last updated |
|---|---|---|---|
| ClinicalTrials.gov | Registered clinical trials | 558 | 2026-09-14 |
| Source | Type | Items | Last updated |
|---|---|---|---|
| europepmc.org | Other | 68,244 | 2026-09-28 |
| core.ac.uk | Other | 11,297 | 2026-09-21 |
| doaj.org | Other | 1,971 | 2026-10-15 |
| biodiversitylibrary.org | Other | 883 | 2026-09-28 |
| zenodo.org | Other | 664 | 2026-09-20 |
| en.wikipedia.org | Other | 92 | 2026-09-21 |
| ISRCTN registry | Other | 15 | 2026-09-20 |
| api.fda.gov | Other | 4 | 2026-09-22 |