Emacs-langtool VS org-fc

Language Tool does this, I believe, but I think it's modal rather than on-the-fly.

Perhaps something like https://github.com/mhayashi1120/Emacs-langtool which you can self host. Or if you don't mind SaaS - there's grammarly integration for emacs too.

There’s already Emacs package, but it works only with offline version.

https://github.com/mhayashi1120/Emacs-langtool

Now that I checked, looks like there’s another package, but I didn’t t try it.

https://github.com/emacs-languagetool

Check out textidote too. It's languagetool understanding \LaTeX syntax, and you can set it for flycheck-checker. Emacs-langtool coupled with langtool-ignore-fonts is also good for \LaTeX documents. You may want to configure them to disable a few rules to reduce false positives.

I use https://github.com/mhayashi1120/Emacs-langtool

Didn't see it so far: LanguageTool integration in Emacs. It really helps me a lot, as I'm a making lot of language errors. LanguageTool requires Java (standalone app is a Jar file), could start is a bit long, but then it's really easy to use and for me feedback is better integrated in Emacs than for example in LibreOffice.

I have tried org-drill but decided against it and other Emacs options including chenyanming/anki.el, eyeinsky/org-anki, l3kn/org-fc and abo-abo/pamparam in the end. They all work as advertised and all use or a slight variation of the same SM2 algorithm used by Anki. They all use this one as it is publicly available.

org-fc has been great to work with. It's been easy to confirm and use. The dashboard is also nice. Do have a look.

org-fc can handle what you would like to do. You can find install instructions here, I don't know exactly how doom works but I imagine you can get what you need there.