What is the best multitasking app or tweak to use for jailbroken iPhone?

I have a jailbroken iPhone 4 and it's on 4.3.3 . Since ProSwitcher (My favorite multitasking app in iOs3) is not updated and only works for 3.0 firmwares I need a replacement for it. I want to glide through apps using activator and a good simple app in Cydia. Thanks