> Edit: based on your reply below, it looks like I have to spell it out. GUIs are built with UI frameworks, not just with programming languages and markup langu

> Edit: based on your reply below, it looks like I have to spell it out. GUIs are built with UI frameworks, not just with programming languages and markup languages. JS frameworks are so short-lived that one can't be sure if their code will still work in one year. Ok, so let me spell this out too (frameworks/librairies mixed): - jquery: 10 years - backbone: 6 years - angular v1: 6 years - ember: 5 years - react: 3 years Otoh, Qt5 with QML: 3 years. Quoting from wikipedia: > Qt 5 was officially released on 19 December 2012. This new version marked a major change in the platform, with hardware-accelerated graphics, QML and JavaScript playing a major role. The traditional C++-only QWidgets continued to be supported, but did not benefit from the performance improvements available through the new architecture.