Bitwarden actually. I was really split on this but ultimately I trust Bitwarden, the company, to run a secure server than myself.
Who has time to track CVE's and react to them in a timely manner? I don't. If something happened, I probably don't have the infrastructure or know-how to even realize I had been breached.
A public Matrix server. Its just a never ending black-hole of ever increasing storage requirements and the software is too buggy to not become a maintenance hassle.
I do run a Synapse server for bridging purposes, so I am not just talking in theory.
Backups. Cloud services like Backblaze B2 are so cheap for the durability they offer, it just doesn’t make sense for me to roll my own offsite solution with a Raspberry Pi at my parents’ house or something. Restic encrypts everything before it leaves my machine.
Password manager- it’s too important and it’s the thing that has to work for me to recover when I break something else. I’m happy to support Bitwarden with a few bucks a year.
Email- again, it’s mission critical and I have a habit of tinkering with things and breaking them. And it’s just no fun. The less I need to think about email, the happier I am.
Minecraft. When I started out it was fine but when I began to get regular visitors I got DDOSed for days on end and people poking me for ssh access. Never again.
I tried getting a music setup to work, but I couldn't find a good solution for generated playlists with new song recommendations. The self-hosted music service just can't add songs it doesn't have yet, so it's not really feasible. Plus I still have a very cheap YouTube Music subscription from the GPM days.
I don’t self-host Nextcloud. I have a cheap cloud instance running it and it’s essentially my off-site backup for important documents. I don’t put just anything up there but I live in New Orleans so I feel like I should assume my home server won’t necessarily be online when I most need insurance documents and shit like that.
Nothing really. I'm comfortable hosting mail, chat, my passwords and important documents.
However:
Hosting personal/important data for other people is a bit intimidating because you kind of guarantee for safety and availability.
And services that are likely to be misused for illegal stuff and would be too bothersome. Otherwise i might host an anonymous spam eating email-forwarder, maybe a tor exit-node and a forum where adults can practise free speech. But that kind of stuff just attracts the wrong kind of idiots.
Mail server, but mostly because deliverability in this day and age is a nightmare. If you're some one off running your own mail server in 2023 be prepared to deal with many headaches around IP reputation.
If something happens to me, or I pass away, wifey has instructions on shutting everything down (probably should write instructions on how to save all the important stuff).
But I don't want to deal with other peoples stuff. I like tinkering with my server and different docker containers, etc. So I don't want someone complaining they can't access their photos because I wanted to try something new. Also, just don't wanna be responsible for storing their photos and important documents.
In the early days it was cloud and mail, since Mailcow works really good, it's just the cloud. Because nextcloud is too much hassle, all this php stuff... I have a managed nextcloud at hetzner and I am really happy this is something I haven't to worry about.
I check ocis from time to time, if it is usable the same way, I would selfhost my cloud again. NC on selfhost? Only if they do the same steps ocis already made. Because ocis is a simple single binary without php.