I remember Gitlab requiring quite a large amount of resources, so if you’re talking about a solo project, I’d skip it and go with something a lot leaner like Gitea, person.

I’ve never had any security issues with GitHub in the past though, and extended features are free for open source projects, so it’s kind of hard to ignore.

If it didn’t give you problems, go for it. I’ve run it for years and never had issues either.

Keep using the NAS as long as it keeps being useful. Just for moving some services off onto something else, it sounds like you could just get a low power minipc of some sort and run your services there. An N100 or AMD APU would work just fine for Plex (transcoding on Intel may be a bit better).

If you’d rather go the extra mile and build a larger machine with a disk array, you don’t need anything super wild for the CPU or memory based on the services you’ve listed.

Home Assistant for family members

This