Does your phone support one-click multitasking? No? Well, you might not be satisfied with long-home button then, are you? Here's a better solution. Try Sidebar - A new way of multitasking. This will free you from silly and slow multitasking launch - you'll see!
Sidebar is designed to be fast, smooth and powerful without taking a lot of battery life or high RAM usage.
And what excatly is that Sidebar? It's, as the author says, the new, brilliant new way of multitasking.
I have to admit, this app is made very pretty. Except multitasking, you can quickly open toggles - enable WiFi, bluetooth and more. And everything by just one swype of your finger.
And yes, this all is in one sidebar. Pro version offers custom icons, right side swype, task management, adjustments and unlimited items - only for 1.8$. There's a free version as well, obviously. You can get it from Google Play here.