It actually uses libraries: one for DOM traversal and another which provides a canvas. It's just that they are typically readily available in modern browsers an

It actually uses libraries: one for DOM traversal and another which provides a canvas. It's just that they are typically readily available in modern browsers and you have to go somewhere else to see the sources in a programming language. Perhaps "software rendering" would be a better word combination. Would be interesting to see similar projects in other scripting languages (Lua, Python etc.).