https://killapps.com/
BelSoft's KillApps, kill application (for teachers)
KillApps is a software to kill application / applications. You can permit / prohibit execution of applications on computers. Replace Windows policies.
belsoftkillapplicationteachers
https://play.google.com/store/apps/details?id=com.tafayor.killall&hl=en
Killapps - Close Running Apps - Apps on Google Play
Close apps running in background automatically and Monitor RAM Memory.
running appson googlecloseplay