What are some alternatives?
When comparing Page Flows and UI Movement, you can also consider the following products
UX Archive Animated - iOS apps animated user flows
UI Garage - Specific mobile and web design patterns for your inspiration
User Onboarding - Onboarding teardowns of popular sites/services
UI Interactions - The best UI Interactions for your inspiration, every day.
Really Good UX - A library of screenshots for UX inspiration
UpLabs - The best material design, iOS & web resources, every day