Multi-platform app that allows your devices to communicate
libmediawiki is a KDE C++ interface for "MediaWiki"//www.mediawiki.org based web service as "wikipedia.org"//www.wikipedia.org
A general purpose C++ parser with a plugin infrastructure enabling 'generators' to be written, which can do various things with the C++ AST. It is currently used for generating the various SMOKE libraries.
Plasma library and runtime components based upon KF5 and Qt5
LibTMCG is a free C++ library for creating secure and verifiable online card games
Multi-platform Qt notification framework
Got any useful tips about KDE/kpat?
... I send out a list of most interesting libraries and apps in the "C++" section to about 1100 subscribers.
Do you want it too?