I’m responding more to the comment that it’s extra steps. It’s clearly not as good a solution as obsidian, but there are no extra steps for it being accessible over the web or to all your devices - not just those for the devices built in cloud provider.
I think GitHub/gitlab issues is totally viable. Obsidian/Logseq too.
Or just use GitHub/gitlab issues.
(I wouldn’t say Obsidian is perfect, but so far I haven’t found any note-taking application that I like more.)
Then for unlimited collaborators in 2020: https://docs.github.com/en/get-started/learning-about-github...
Granted, you do have to install it versus using the default editor that comes with your operating system, so that is an extra step. But most people don't use the builtin editors from their OS anyway.
I'm thinking, host it locally and just let one drive act as back up for the mark down files it produces?
I knew about using just git, but having Windows, Linux, macOS, iOS and Android, it was just way easier to use this solution instead of fighting with git-like apps for each OS.