(Disclaimer: I work on Notion) It looks like desktop software built with Flutter. Their editor is based on https://github.com/singerdmx/flutter-quill https://g

(Disclaimer: I work on Notion) It looks like desktop software built with Flutter. Their editor is based on https://github.com/singerdmx/flutter-quill https://github.com/singerdmx/flutter-quill which also has a web version, so maybe they’ll be able to target web in the future. For now I don’t think they support multi-user sharing or collaboration yet, and I didn’t see web features listed on their roadmap either.