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
...Also includes full sourcecode for the Unicodum demo app. This is a Unicode viewer consisting of a qooxdoo-based mobile client and a choice of Pascal (FCGI) or PHP server app.