They don't mention it as one of their inspirations but this also looks like a cool open source alternative to Obsidian. Although I don't think Logseq has a mobile app which i really love for Obsidian.

Switching from Obsidian to Logseq was a challenge and I’m not 100% happy with the latter just yet, but it’s good to adapt. I have had only a couple of iCloud sync issues between my MacBook and my phone, but it was mostly user error.

Logseq is well worth checking out. It has a lot of work left to do, but it’s on its way.

I just actually started using it yesterday. I used Obsidian before but not really. It doesn't have the complexity that Obisdian offers but that's not necessarily a bad thing. It's just something different. You could totally set up Obisidan to work like Logseq, but that involves work and with Logseq you could just start without needing to do anything.

Two features I'm still missing is the ability to color my graph and an option to show line numbers.

I tried and it's ok but the generated markdown is too Logseq opiniated for me. Thus it kinda lock me to a specific software which I don't like

Loved everything about Logseq except the insertion of bullet point symbols in the markdown files, so I went back to Obsidian. I get that Logseq is actually an outliner, but so many people would also like it to work without that. Opening their markdown files in any other editor looks terrible then.

If you can build your thinking around outlining and can tolerate minute inconveniences, I think it's a nice tool for PKM. Not sure about what privacy Logseq adds, from the perspective of someone who uses Obsidian with SyncThing to synchronize his notes between devices.