This WordPress is running in your browser!
There is no server running it. The WordPress code, PHP runtime and database are all running inside your browser.
Feel free to play with it: log in with admin / admin, add a comment, etc. To know more, read the article about how this was implemented.
How is this possible?
Thanks to WebAssembly (Wasm), an exciting new technology that allows you to compile code to create portable binaries that can run in the browser and other platforms. This WordPress demo includes a PHP runtime and SQLite database compiled to Wasm.
Read more about all the technical details on this Wasm Labs article.