See list below. Not all is dead, and some pick libplasma3 deps as a non essential thing. i.e. they work for their main functions despite this.
However many/all of the plasmoids/widgets are dead and have no new versions, never existed in debian etc.
reverse-depends libplasma3
Reverse-Recommends
- kdelibs5-dbg
Reverse-Depends
- amarok [amd64 arm64 armhf i386 ppc64el]
- baloo-utils
- bodega-client [amd64 arm64 armhf i386 ppc64el]
- dolphin4
- kde-runtime
- kdelibs5-dev
- kget
- kmix
- kmldonkey
- knights
- kremotecontrol
- libbodega0 [amd64 arm64 armhf i386 ppc64el]
- lightdm-kde-greeter
- mangonel
- plasma-runner-kopete [amd64 arm64 armhf i386 ppc64el]
- plasma-scriptengine-javascript
- plasma-widget-activitymanager
- plasma-widget-amule
- plasma-widget-bkodama
- plasma-widget-cpuload
- plasma-widget-drop2ftp
- plasma-widget-flickr
- plasma-widget-folderview
- plasma-widget-fortunoid
- plasma-widget-kbstate
- plasma-widget-kepas [amd64 arm64 armhf i386 ppc64el]
- plasma-widget-lastmoid
- plasma-widget-makestatus
- plasma-widget-memusage
- plasma-widget-nextwallpaper
- plasma-widget-pgame [amd64 arm64 armhf i386 ppc64el]
- plasma-widget-redshift
- plasma-widget-searchmoid
- plasma-widget-simplemonitor
- plasma-widget-stockquote
- plasma-widget-teacooker
- plasma-widget-tictactoe
- plasma-widget-tvprogramme
- plasma-widget-uim [amd64 arm64 armhf i386 ppc64el]
- plasma-widget-weatherforecast
- plasma-widget-wifi
- python-kde4
- python3-pykde4
- wally