paper.li - Collect content that's aligned with your customers' interests, and deliver it wherever they are. Automatically share content on social media, publish your own web newspaper and send email newsletters.
Really Good UX - A library of screenshots for UX inspiration
Facebook for Business - Facebook Business gives the latest news, advertising tips, best practices and case studies to meet the business goals.
UX Archive Animated - iOS apps animated user flows
Substack - Substack makes it simple for a writer to start an email newsletter that makes money from subscriptions.
Page Flows - User flow design inspiration for mobile & desktop