SilverBullet: self hosted web app that runs in any browser.

So sad…

Latex yes: https://github.com/silverbulletmd/silverbullet-katex

Not sure what you mean with toggles.

And embedded images: yes. Just drag and drop or copy and paste them.

It’s an offline capable PWA. So it works on any device that has a modern web browser with having to install anything (on the client). It’s open source software. It’s just different.

A bit of a self promo (I’m the main author), but you may also want to look at SilverBullet as alternative: https://silverbullet.md/

Bit more technical than EverNote. More like Obsidian, but 100% open source and self hosted.