FlowMapp - FlowMapp is a UX planning tool for creating visual sitemaps and user flow.
Really Good UX - A library of screenshots for UX inspiration
Usability.gov - Resource for user experience (UX) best practices & guides
UX Recipe for iOS - Design checklist & estimation tool for your next UX project
UX Check - Easy heuristic evaluations on your website (chrome ext.)
UX Archive Animated - iOS apps animated user flows