Comment by arapacana

Their philosophies are quite different; Obsidian is much more text and link oriented (it's basically a front-end for markdown), whereas Notion is object-oriented and gives primacy to the kinds of objects that can contain text (blocks, tables, quotes, etc.)

Obsidian can be made to work like Notion and vice-versa, but I see Obsidian as more of a hypertext environment/wiki creator, and Notion as an integrated environment to interface with different ways of interacting with knowledge-focused objects.

I prefer Obsidian largely due to its simplicity, and the fact that it maps really well to how I think. Notion is also incredible for what it does, but it's too much for my brain, and the app is still a bit too slow for the speed with which my thoughts can escape me.

Anytype purports to be like Notion.