How the catalogue is built

Sources

• Institutions (142.2k): the Research Organization Registry (ROR) and OpenAlex. Both are public domain (CC0).
• Scientists (0): OpenAlex author profiles that have an ORCID iD and at least three works in the last five years. The ORCID iD is what ties a profile to one person; we leave out profiles without it, because name matching mixes up namesakes.
• Funders and grants (38.6k funders, 0 grants since 2016): OpenAlex, which gathers grant records from funders such as NIH, NSF, UKRI, the European Commission and others, and Crossref.
• Recent works on a scientist's card come live from Crossref, by ORCID iD.
• Fields and topics: the OpenAlex classification of 4 domains, 26 fields, 252 subfields and 4,516 topics.

All countries are treated the same way. We do not leave anyone out because of where they work.

Rankings

Scientists are ranked by citations received by the works they published in the last five years, and only against others whose main research field is the same. Institutions are ranked the same way, among universities, research facilities, hospitals, government and non-profit bodies. Self-citations are not removed and fields with long citation cycles are at a disadvantage; we show the numbers behind every place so you can judge them yourself.

Your card

If there is a card about you, claim it with the "This is me" button: sign in, then confirm with your ORCID iD or with an email address at your institution's domain. After that you edit your card yourself. You can also ask us to correct or remove a card without an account; we do it by hand, usually within two working days. A removed card does not come back when we refresh the data.

We never show email addresses, and we never send "you were mentioned" emails to get you to sign up.

Refresh

Data is refreshed from the open snapshots about once a month. The snapshot used now is from 14 October 2026.