Logseq is also oss, obsidian I believe opening is planned but dunno much about the status, don’t keep up with it.

Why wouldn’t you bother to try it? When I was doing my oscp I had to take mad amounts of notes, I tried zim, cheeytree, a few others I forget and obsidian was clearly the best, electron notwithstanding (and it was religious to me also, but really it has improved quite a lot since we formed our views about electron)

These days, I tend to use obsidian for longer form entries, in the same repo I use logseq primarily (and with working copy git client on my phone, obsidian mobile gives me access to all my logseq files, stopgap until they release the mobile app).