Maybe this should be titled the best lesser known KDE apps as all of them are actually excellent apps, but the best known are likely to be DigiKam, Kdenlive, Amarok, Krita, Marble, etc which are not in this list.
Others such as Kate, Konsole, and similar do already have excellent counterparts on GNOME.
Some of the most feature-rich free applications are designed for KDE.
See https://www.debugpoint.com/best-kde-apps-part-1/
#technology #linux #opensource #KDE