Very slow release cycle and long lifetimes. Qt moves pretty quick and this causes problems for downstream projects. E.g. KDE had to keep Qt 5 alive for _years_ until KDE 6 was ready. Rochus Keller has a version of Qt 5 as well. Trinity is still maintaining Qt 3.
Extremely wide cross-platform support, e.g. on the BSDs and some other niche OSes. I think there's even a Haiku version.
Small (relatively tiny) code size and simplicity.
Very slow release cycle and long lifetimes. Qt moves pretty quick and this causes problems for downstream projects. E.g. KDE had to keep Qt 5 alive for _years_ until KDE 6 was ready. Rochus Keller has a version of Qt 5 as well. Trinity is still maintaining Qt 3.
Extremely wide cross-platform support, e.g. on the BSDs and some other niche OSes. I think there's even a Haiku version.