mibi

Web build: what is different

Files. In Chromium-based browsers, Open folder is a real folder: saves go to disk, and changes made elsewhere show up within a few seconds (a tab with unsaved changes keeps them). If a file changed on disk after the editor read it, a save does not overwrite it: the tab stays unsaved and the next save does. Other browsers import a copy that lives in this browser; Download writes the current file out.
No external commands. Formatters (F4) and the filter (Alt+X) run programs, which a page cannot.
Some keys belong to the browser. Ctrl+W, Ctrl+T, Ctrl+N and a few more never reach the page. The toolbar has every editor key that matters.
No kitty keyboard protocol. xterm.js does not implement it, so kitty_keys has no effect.
One tab at a time. A second tab offers to take the editor over, so two never overwrite each other's session.
Storage. The session, unsaved text and imported files are kept in this browser's private storage (OPFS). Clearing the site's data clears them.

Settings: /mibi.ini, or a mibi.ini in your folder. Licences: mibi (MIT), xterm.js and its fit addon (MIT), and the terminal font, a subset of Maple Mono NF (OFL-1.1).