Saiwal

I doubt authentik will enshittify, i have been using it since 2 years and have been on their discord interacting with the team. They are very helpful and recently made some useful enterprise features available for self hosted users which is the opposite of enshittification.

yes, its also called hairpinning. to avoid this you can use a local dns resolver.

yes, hubzilla supports shareable calendars and invites.

@nocturne self hosted tuberculosis bacteria

Nextcloud AIO has an option to skip domain check. the github README hasinstructions. And i love nextcloud because it integrates many features in one, file sharing, office collaboration, chat, rss reader, mailbox, photos, calendar, address-book, etc.

I have two instances running, one public and one completely local. And having a domain is just convenient but not necessary.