NOTE: I am acting here as messenger, for people in CSO & gov, who commented. Further elaboration might be needed
Index URL: https://index.okfn.org/place/fi/companies/
It's not publicly available
It's not downloadable at once
Difficult to understand why rated as "not publicly available". What might be the reason here? The data IS available, though not super-usable. There are various search criteria that are used for the API, incl. dates and others. Having search criteria does not mean it is not publicly available.
It IS true that not all data is available for downloading at once.