So it seems like you're not the typ of guy who would like reddit.com/r/datahoarder :-)

I mostly keep it simple, so I have scripts for:

- notes (sh-script)
- calendar, contacts and tasks (radicale with khal/khard and shell script for tasks)
- reminders (remind, converted from my calendar)
- irc history (just a simple wrapper around ii)
- mails (mblaze + sh-scripts)

My media is seperated from this (like explained in an other post)
- dms is my document management system which lets me easily scan/copy letters and convert them to multipage PDF, run OCR on it and search them for keywords to save them automatically as "<Subject>_<Person>_<Date>.pdf"
- mms is my multimedia management system which lets me easily rip CD/DVDs with all audio and subtitle tracks and convert them to mkv, finally tagging and sorting them. The tagging is manual for now (Say name of Something + Season + Episode to get info from IMDB) because I haven't found a good way to reliably get that from an API that is for free.
- music, images and alike are just stored inside a filesystem tree (for now). I will soon write a system to handle my RAW files from my camera and alike.

Each computing device has a backup which is copied once locally and once uploaded to the internet in an encrypted and deduplicated storage solution (borg).

I might update this post later because I'm pretty tired so I might have forgotten half of it.