...Acode lets you build and run websites right in your browser, debug with ease using the built-in console, and edit a wide range of source files from Python and CSS to Java, JavaScript, Dart, and more.
IDE written in a single HTML file that runs on the browser tab.
There is no need to install, download a single file and run anywhere.
To change the initial configuration, edit the widew.html file in the last lines.
* Widew use CodeMirror components in code editor.
URLs:
https://soluc.org/widew
https://widew.sourceforge.io