BossPaper is a Wallpapers manager for your desktop that uses very little processor or memory. When you launch an app, the paper rotation stops until your app is closed. This prevents the rotating backgrounds from affecting the performance of your app or game. Winterboard themes use Javascript to do this, but those continue to run even when your iPhone is locked or when you are in another app causing there to be some lag on slower devices.
It can rotate pictures in a slideshow without Javascript using a variety of transitions. You can select the folders, images, transitions to use, transition length, and many other features in order to control the way the background will appear.
This is not a replacement for Winterboard. It is a separate enhancement to help fill the gap where I believe Winterboard leaves off. See more info for a list of features and screenshots.
