Codium with a markdown plugin gives both edit and preview with syntax highlighting. Add in Genie extension with a chatgpt api key and you can really do some cool stuff
Emacs's Markdown mode has two options for preview:
C-c C-c p (Control-C Control-C p) runs markdown-preview, which will open a preview in a new window
C-c C-c l runs markdown-live-preview mode, which will show an updated-as you edit preview next to the text.
In addition to built-in functionality, in my emacs setup, I also personally bind C-c a k to run Make. In my init.el:
(global-set-key (kbd "C-c a k") 'compile)
That way, if you have any sort of project -- which could hypothetically be a Markdown file -- and a Makefile for it in the same directory, it'll build it. An example Makefile:
There are a few good ones I can recommend, depending on what experience are you looking for (programmer, writer, simple note-taking).
Apostrophe would be the first, better for freestyle writing IMO; and then in no particular order I'd recommend Formiko which seems to work wonders for technical / programming-related writing, Remarkable and Ghostwriter for that no items, text only, final desktop kind of experience. Most or all of these should be findable in software stores like Flatpak, too.
It doesn't have any ai unless u add an ai extension. I use continue pointed at openwebui that uses a self hosted model full foss ai tool chain. And again its optional.
Had a quick look for glow but couldn't find it. I didn't know about pulsar. Is it more stable than atom, which managed to fall over when ever I looked at it sideways, a bit like the ZX80 keyboard which would cause a reboot if you dared to think about touching it, that said, reboot was much faster than atom starting up. Does pulsar take the same absurd amount of time?
Name of the app is kate.
It only does light formating and syntax highlight.
Are you looking specifically for markdown editor that just doesn't hide markup?
From the list you gave my understanding was that you are looking for higlight and that's +- it.
There are multiple markdown specific editors that do it like ghostwriter, retext, or even emacs with markdown-mode (iirc it does rendering without hiding markup, auto-formats tables, makes links clickable, etc.)