In Fact this is WordPress Running in the Browser it self in the Frontend used mainly for https://github.lemanschik.com/chromium-virtual-environments A Chromium Project Fork that aims to Replace Goma and Includes a Fully Interactive Edtion of Frank Lemanschiks Books like "The-Dragon-Book-Compiler-Principels-And-Tooling-3rd-edition.md" Also it includes Live Educational Material to Learn Stealify Lang a Language Framework that we use to incremental adopt Polyglot Codebases and Documentation To Simplify Maintainance and Development as also speed up Rollouts of software.
https://github.lemanschik.com/chromium-virtual-environments/demos/wordpress