Switchr imitates the gestures on Windows OS using the Alt-tab combination.
Once installed and activated, swipe in from the edge on the left to the right. A stream of your recent apps appears and you can switch between them with ease. Switchr has three different styles – Flow Slide and Arc. Switchr can even replace your default search action, allowing you to switch between apps using the search key or by swiping up from the navigation bar.
Using Switchr Arc Style
Flow Style Slide Style
The Slide style brings up one icon at a time. You can configure Switchr to launch in phone startup. You can also define the margins of the screen space in which you have to swipe to access it. Switchr has Pro Key, after purchasing which, you will remove ads and allow you to kill apps with gesture.
You can download Switchr from the Play Store for free