It seems like there's a lot of recent interest and effort in open-source or self-hosted Notion-like/markdown-with-widgets applications and platforms. AppFlowy (https://github.com/AppFlowy-IO/AppFlowy) comes to mind; I attended one of their monthly "town hall" meetings a few months back, and looks like they're rapidly increasing in popularity. I think there was another similar project like this on HN front page last week, IIRC.

This makes me happy, because I switched to Obsidian primarily for local-first file storage in a platform-agnostic format. I've learned to love many things about Obsidian and am writing a few plugins myself, but there are still several Notion-esq functionalities I wish I had, and I find myself handing off between Obsidian and other webapps for certain effort, like team project management.

I used to get far more excited to explore new projects like BlockSuite, and I really appreciate their documentation, but I find it hard to justify allocating time to reviewing and trying out new tools when I still have much more improve on with my Obsidian usage; this is especially true of newer projects where I'm unsure of their shelf life.

To assuage my internal conflict I remind myself that I think plaintext is fundamentally the right choice for much knowledge collection, and I'm proud to say that if the internet shut down, I'd retain a significant growing fraction of my personal data.