Design Principles - An open source repository of design principles and methods
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
Product Disrupt - A design student's list of resources to learn Product Design
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
Colorbox.io - Create accessible color systems 🎨
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.