I decided to go a little more deeply into them, and tonight, I uploaded a repository (https://github.com/joaomelo/textorama) with an open-source project I've been working on nights and weekends for the last few weeks.

Textorama is a web editor that works with plain text files in your local system. The content is in your disk in a universal open format, and the browser ensures the editor only accesses the files you permit.

There is a working instance available here: https://textorama.online.