iOS 12 GUI - Free collection of UI components and screens of iOS 12
Facebook for Business - Facebook Business gives the latest news, advertising tips, best practices and case studies to meet the business goals.
Landing UI Kit - Handcrafted UI components for landing pages
Buzzstream - Build Relationships. Build Buzz. Web-based software that helps the world’s best marketers promote their products, services and content.
Invision - Prototyping and collaboration for design teams
Fomo - Fomo turns your site into the online equivalent of a busy store