What are some alternatives?
When comparing BossPaper and Springtomize, you can also consider the following products
Winterboard - Give your iPhone or iPod Touch a graphical overhaul!
Lockinfo - You can find this app in Cydia - Tweaks.
Muse Art - Muse mission is to transform the lock screen into a tool of discovery and inspiration.
Dreamboard - DreamBoard lets you take control over the homescreen of your jailbroken iPhone.
Cylinder - Sexy homescreen icon animations
Pimp Your Screen - All you wanted to know about Apalon applications for App Store, Google Play and Amazon Appstore. Learn more, follow download links, or get the press kit.