Mini is a web browser application based on the Python PyQt web engine, made in 290 lines of code. The code is written and published as is, so there's a lot more to come up with and redo here
https://www.python.org/ - Python (programming language)
https://pypi.org/project/PyQt5/ - PyQt5 library for python
https://www.youtube.com/watch?v=8qxHaHJ_JyE - YouTube video with making this browser