I only know German ones: senfcall.de or bbb.digitalcourage.de

the big ones out there are BigBlueButton and Jitsi. they have a lot of public instances, so you can easily check if they fit your needs.

Damm i read ABP … and was confused. Yeh sure ads are smoll brain! (Same as ABP)

ADS?

Has a mobile app!

I use it daily for travel by bike or foot (kombined with BRouter). And its awsome!

Experiance by car is a bit mixed tho. (EU-Germany)

In terms if logging: sys journal does the job for me …

I do run prometheus + grafana for some services but that is mostly for some fancy looking graphics nothing really usefull.

I would recomend you to monitor updates of you apps so you are well informed when und what to update (i just have subsribed to all the diffrent release git rss feeds)

Nothing realy exept licencing

Maybe consider using forgejo (gitea fork used by codeberg)

And i do think, some changes would be needed but nothing big, also it wouldnt ne activated by default.

I second matrix. Its also federated and has mutible clients. But like lemmy under development (but more advanced in the development process)

Obtainium ist a packetmanager pulling updates/new versions from the source (i.e. some form of git)

And the three apps are Lemmy/kbin clients (under heavy development) where some are not available at more conventional packagemanagers like F-Droid.

Pixelfed as instagram alternative is a big one i guess.

Not realy fedi but somewhat: Matrix as mesenger/discord alternative.

to be honest: i have negligible knowledge for iOS support/iOS Apps. Quick search told me there is a apple native way to integrate calendar and contacts https://docs.nextcloud.com/server/19/user_manual/pim/sync_ios.html#

Yes Apps/Integrations/what ever its called ^^ Using Nextcloud (stable branch) for a while and had minimal problems yet. List of apps working fine which i am using:

apps i had trouble with and am not using thus: Colabora Office/OnlyOffice , i am using my own Cryptpad for those tasks.

Hm, some FOSS solutions def exists, but they dont have a super clean UX. Nextcloud + integrations covers all tasks you have listed as example.

Nextcloud is selfhosted, yes. But managed solutions exists, so you dont have to set it up your self/maintain it. (Free instances seem to exist https://nextcloud.com/sign-up/ dont know about privacy/encryption on these tho)

I am using Nextcloud Calender + DavX5 (android) + etar (android) for my colaborative and synchronized calenders. Working good since 1 year.

Probably matrix: I dug a bit into the perotocol and started hosting my own instance. Mastodon followed (but not selfhosted)

Tried lemmy for a bit but didnt like it. Right now i give it another try.