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, it’s a lot like Obsidian as it also has knowledge graphs, tags, is markdown-based and self-hostable but, in contrast to Obsidian, it’s fully open source
Logseq user here too.
However, for a quick, transitory note, I use Kate or, more recently, Xpad. Only then I transcribe the content to Logseq. Why?
Because while Logseq is great as an outliner and for network thinking, it’s as graceful and agile as an elephant.
The gist of what I’m saying is: for now, and for me (hardware might be playing a role here, but I don’t think so) Logseq is a good note database. For quick typing, I have to use something else.