GamePad - Apps on Google Play

Free Virtual GamePad & keyboard for playing games.
Free Virtual GamePad & keyboard for playing games.

Gamepad Piano – Apps on Google Play

GameSir X2 Pro-Xbox Mobile Game Controller【Officially Licensed by Xbox – GameSir Official Store

AirConsole - Multiplayer Games - Apps on Google Play

Android Apps by Joystick-Games on Google Play

Remote Play Controller for PS - Apps on Google Play

Mobile Gamepad - Apps on Google Play

Mind Controller - Apps on Google Play

RealGamepad – Apps on Google Play

BT Controller - Apps on Google Play

How to use a PS4 controller on Android

PSPlay: Remote Play - Apps on Google Play