Currently I’m using Joplin with Syncthing-backed file system synchronization. I’m pretty pleased with it, as I do like tagging- and Markdown-based systems.
I plan to upgrade to server-based synchronization, but before doing that, however, I wanted to see what other people are using.
Edit: So far I see a slight favor towards Joplin and Logseq, but I totally didn’t expect (and appreciate) getting so many different answers.
Logseq.
I used Joplin in the past, but just didn’t quite get completely comfortable with it.
I also tried Nextcloud in the past… that project has become too big for my needs and the file syncing had issues.
Logseq is very similar to Joplin (ie markdown files), but IMHO the editor is easier with Logseq, plus the files are just simple plaintext files, named after the page title, so are easy to edit outside of the application (and immediately update in the app)
At first, I was a little unsure of Logseq’s default of working as a daily journal, but after a while it makes more sense for me - I use it at work, so 99.9% of my notes are meetings, tasks that occur during daily life… and of course those daily journals can refer to other “non-time based” project pages…
I also use syncthing to sync the notes between android phone, linux and Windows laptops and my NAS… so that wouldn’t change for you.