Really Good UX gives you a look inside your favorite products.
FlowMapp is online planning tool for creating a visual sitemap that will help you effectively design and plan a better UX for your websites.
Scheme Flowcharts is a huge pack of layouts for UX prototyping. This toolkit consist 310+ flowcharts in 9 categories for Mobile & Web. All flowcharts carefully crafted and easy to customize. You can use Sketch Symbols and Styles for speed up your workflow.