Where can I download a database of all French businesses?
It must be free, and contain as much details as possible about each company.
You can use the SIRENE database, maintained by INSEE, part of the French government.
It is the official companies database, and has about 10 millions. It is updated everyday.
It used to cost money, but now it is free:
The database can be downloaded, or browsed online.
For each company, you get:
I was looking for the same data and I found a lot of websites using some kind of database like https://societe.com, https://entreprises.lefigaro.fr, https://sireninfo.com etc. So I figured out it was available somewhere for free.
The actual place where you can download the whole database is here: https://www.data.gouv.fr/en/datasets/base-sirene-des-entreprises-et-de-leurs-etablissements-siren-siret/#_
If you need additional you can use also: https://public.opendatasoft.com/explore/?sort=modified