Home page for the entire suite (in French) with some screenshots: https://lasuite.numerique.gouv.fr/
Code bases are on GitHub and they use English there: https://github.com/suitenumerique/
Dev handbook (in English): https://suitenumerique.gitbook.io/handbook
Not French and I can't say I personally tried deploying any of them, but I've been admiring their efforts from afar for a while now.
As a Frenchman, this stings. I have been working since 2017 in creating an open source alternative to Dropbox (https://github.com/mickael-kerjean/filestash), the reality is out of 60 customers, only 2 are French and most contacts I've had with French entities only shown interest onto open source because they were not willing to spend a dime on anything.
Customers are mostly US entities and other countries in Europe. The gist is our technology is already working accross every possible storage technology and every identity provider, has a clean modern UI, has gateway capabilities to expose your data with open protocols like SFTP, FTP, S3, MCP, with virtual filesystem capabilities that enables a decentralized approach through federation and tons of other advanced setup, is deployed in production in places like US military, MIT, European Commission and many other othher high profile places.
We just launched https://www.filestash.eu a few days ago hoping to talk to people in France who are interested in translating the talk of data sovereignty onto actual actions. If anybody who is reading this is truly interested onto a sovereign Dropbox and is willing to put talks onto a concrete reality, reach out to me, I'd love to talk to you