DeskPins - DeskPins can be used to make any application topmost, that is, to keep it above all other windows.
remove.bg - Remove the background of any image 100% automatically
Skybn Window On Top - Window on Top can be used to make any application topmost,that is to keep it above all other windows.
Icons8 Background Remover - Quickly remove the background from any photo
WindowTop - Easly set any window on top, just move the mouse to the top area of the window.
Removal.ai - Create transparent background for any image using Removal.ai - The fastest, easy-to-use & free tool to automatically remove backgrounds online.