I was pleasantly surprised when working on a patch for LyX: https://www.lyx.org/ https://www.lyx.org/ It's written in Qt, but still uses "normal" C++ for a lot

I was pleasantly surprised when working on a patch for LyX: https://www.lyx.org/ https://www.lyx.org/ It's written in Qt, but still uses "normal" C++ for a lot of stuff.