choqok : Free/Open Source micro-blogging client by KDE ( https://choqok.kde.org/ https://apps.kde.org/choqok/ )
neochat : Client for Matrix, the decentralized communication protocol ( https://apps.kde.org/neochat/ )
tokodon : Mastodon client for Plasma and Plasma Mobile ( https://apps.kde.org/tokodon/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a kde
For Paludis use this rsync : rsync://gentoo.zugaina.org/kde-portage
If you have a problem : ycarus(-at-)zugaina.org