also, interesting instances to look at [maybe for later migration] :
https://tldr.nettime.org/about : tldr.nettime is an instance for artists, researchers, and activists interested in exploring the intersections of technology, culture, and politics.
https://post.lurk.org : art, sound and design practices that engage with net and computational politics/culture/critique/history / gaming / art servers, self-hosting, networked infrastructures / generative and algorithmic processes / proto-, post- FLOSS development, publishing and licensing / net art, software art / post-digital practices including media archeology / DIY/DIWO / permacomputing, collapse informatics / ...
https://mastodon.art/about : Mastodon•ART — an inclusive community for creators that prioritises the safety of its
+ fr speaking
https://mamot.fr/est un serveur Mastodon francophone, géré par La Quadrature du Net.
https://piaille.fr/about - Piaille.fr est un serveur mastodon public francophone accessible à toutes et à tous. marginalised members.
and many others i forget