This app requires ROOT so please don't install if your device is not rooted or if you don't know what a rooted device is.
MultiWindow Commander has one specific function - it allows you to easily ADD more multi window or pen window or popup window apps to your Samsung Galaxy device. It is the only multiwindow manager or multiwindow apps manager that works on Samsung's new roms based on android 5.0 Lollipop.
Supported devices include:
Galaxy S6
Galaxy S6 Edge
Galaxy Note 4
Galaxy Note Edge
Galaxy Note 3, 2 & 1
Galaxy S5, S4, S3
Galaxy Alpha
May also support most Galaxy phones and tablets that has multiwindow, pen window or popup view feature.
Works on Samsung's android Kitkat and Lollipop ROMs.