Backgrounder allows for total control of backgrounding on an iPhone/iOS-based device. With Backgrounder, *you* decide when an app should keep running, and when it should quit. Backgrounder provides true backgrounding; minimized apps can be made to continue to run as if they were still the foreground app.
Changes in this version: MOD: Allow installation on iOS 4.1.
Warning: This version is untested on iOS 4.1 USE AT YOUR OWN RISK.
You can download Backgrounder from Cydia for Free.