Oh that’s cool! I tried to take part in their beta but it was a mix of the app wouldn’t even start on my phone and when I finally found a version that would I couldn’t find my invite key anymore. Guess it’s time to give it a second chance :)
Professionally I love Logseq but I’d love to replace my personal Notion notes…
I had radicale running for some years, it was finicky to set up I remember doing a fix in the code. But when it worked it did so without issues. Not sure how active development was in the last years maybe it has improved.