What are some alternatives?
When comparing Page Flows and UX Archive Animated, you can also consider the following products
User Onboarding - Onboarding teardowns of popular sites/services
UI Patterns - Level up with interactive mobile design patterns
UI Movement - The best UI design inspiration, daily
Really Good UX - A library of screenshots for UX inspiration
pttrns - iPhone and iPad user interface patterns
FlowMapp - UX planning tool for creating a visual sitemap