[tbalci]

I migrated off from Evernote and OneNote completely to Obsidian. I would not advocate for Obsidian (or any specific application) here, but rather advocate for having your notes in plain text files - e.g. Markdown. This will ensure that whatever application you use on whatever operating system, you will have your notes easily accessible. It also gives you the flexibility to choose how you want to sync your files - OneDrive, iCloud, Dropbox, whatever you name it. This kind of gives a level of data sovereignty as well.

[wduquette]

Agreed. I’m currently using Obsidian as well, but I’ve got many notes I was able to transfer seamlessly from another app precisely because they were Markdown.

[gtirloni]

Relevant for OP's requirement of AI: https://github.com/khoj-ai/khoj