Open Media Vault (OMV)! I was given a used QNAP NAS, but didn’t want to use their OS. TrueNAS has higher system requirements than what I had and Unraid is paid. OMV has been a dream! Having the flexibility of a full Debian OS, but also with the prepackaged software I need, it amazing. Plus, I love the web UI. At the time of writing this, I have 12TB of usable space with 3 months of uninterrupted uptime.
Mastodon was my first, although this feels way more polished for sure. What I liked about Reddit is that you go there for the topics you care about, posted by people you don’t care about. Mastodon and most other social media is people you care about, posting things you don’t care about. I think I’ll stick around here…
Edit: I have also used Matrix, but don’t really have anyone to chat with on it… it was tough enough getting some friends and my family on Signal lol
Passkeys are asymmetric, meaning that the server only ever sees your public key. If the server gets breached, then only your public key is leaked, which isn’t a big deal. Functionally, it’s almost identical to SSH keys.