principles.design is an open source resource created to help you understand and create Design Principles.
Framer offers a seamless workflow. Draw, animate, and share high-fidelity work. Framer is a complete workflow for creating interactive designs.
Mobbin is a hand-picked collection of latest design patterns from mobile apps that reflect the best in design. Over 150 apps and 8,000 patterns (screenshots from iPhone X) are currently available on the platform. Get instant results through our comprehensive filter & search functions and save your favorite patterns into your own libraries.
A collection of articles, videos, and resources made by designers at Facebook.
Use Atlassian's end-to-end design language to create straightforward and beautiful experiences.
Over 170 responsive design blocks ready to be used in your web or mobile apps. All blocks are based on the Bootstrap Library, and they are the building blocks for beautiful websites.
Build awesome websites faster by using popular website layouts grouped in 10 categories.
InVision Design System Manager makes it possible for every product team to create and maintain a design system at scale.