I discovered SilverBullet recently and damn, such a freaking amazing project. I'm wondering now if there are other projects like SilverBullet that I'm missing. I think the biggest gap that I have today is some sort of todo app akin to Todoist/Things that I could selfhost/own it.
I've been really digging Super Productivity lately. So far it's the one I've found that has "stuck" the best for me.
One thing it has is a spot for notes on pretty much all levels of the system (tasks/projects/areas/etc..) that renders markdown. I just wish there were a way I could more directly relate/integrate those notes to my silverbullet notes.