This is an example web browser built with Python and Qt. Using the QtWebEngineWidgets system introduced in Qt5.6, this provides a single-window browsing experience with the usual controls, as well as saving and loading HTML.

If you want to learn more about build GUI applications with Python, take a look at Python GUIs which covers everything you need to know to start building your own applications with PyQt5.

Icons used in the application are by Yusuke Kamiyaman.