Is there a frontend to self-host?

1

I have my own languagetool server and I also use the browser plugin.
But for some applications a frontend like the one on https://languagetool.org would be very useful. Is there something like that already?

2

There’s no such front-end publicly available, sorry. For selected business customers, we have a beta version.

3

Then I guess I’ll have to build something myself. Are there plugin for editors (TinyMCE, CKEditor, etc) that can use a self-hosted server?