_Styleguides

• Atlassian Design — Design, develop, and deliver.
• Disqus — colors, typogrophy and Disqus logo.
• Duo Lingo — Duo Lingo design.
• Helpscout — Helpscout style guide.
• IBM Design — Tools that help you work smarter, not harder.
• MailChimp — The Pattern Library.
• MarvelApp — MarvelApp design system.
• Material Design — Create intuitive and beautiful products with Material Design.
• Mozilla — Style Guides.
• Salesforce — Lightning design system.
• Yelp — Yelp Styleguide.
• Primer — the CSS design system that powers GitHub.
• SAP Fiori Fundamentals — A light-weight presentation layer that can be used with your UI framework of choice.
• Wikimedia — Design style guide for Wikipedia and other open-knowledge projects.

_Storybooks

• Airbnb Dates — An internationalizable, mobile-friendly datepicker library for the web.
• Algolia InstantSearch — Lightning-fast, hyper-configurable search.
• Appbase Maps — A storybook playground for ReactiveMaps and ReactiveSearch.
• Artsy Force — Artsy's "Force" component library.
• Buffer Components — A collection of Buffer UI React components.
• Carbon Components — IBM's Carbon Design System implemented in React.
• Cosmos — A Design System For Auth0 Products.
• Coursera — Coursera UI component library.
• Fyndiq — Fyndiq UI Component library.
• Griddle — An ultra customizable datagrid component for React.
• Grommet — Styled components for Reactjs.
• GumGum — GumGum (Computer Vision Company) Component library.
• Hack Oregon — Official component library and storybook for Hack Oregon.
• Lonely Planet — All the tools you need to build the Lonely Planet UI experience.
• Lucid UI — Component and charts library by AppNexus.
• MockingBot — MockingBot UI component library(ibot).
• Quran.com — Component library for Quran.com, Quranicaudio.com and Salah.com.
• React Event Timeline — Event timeline component.
• React Native Web — Storybook demo for React Native Web.
• React SVG Pan Zoom — A React component that adds pan and zoom features to SVG.
• Semantic-UI — Storybook for Semantic-UI React components.
• Tachyons Components — A searchable directory of Tachyons Components.
• TerraEclipse — React components for TerraEclipse, a political technology and strategy firm.
• TodoMVC with Specs — Todo app Storybook with built-in unit tests.
• Trunx — Super Saiyan react components, son of awesome Bulma.
• Uber React-Vis — A composable charting library.
• Wix Style React — Components that conform to Wix Style.

_Resources

• AirBnB Design
• ArtLebedev

_Videos

• System of Systems — Nathan Curtis
• When We Use Systems — Karri Saarinen

_Comparators

• Adele — Repository of publicly available design systems and pattern libraries by UXPin.
• awesome-design-systems — A collection of awesome design systems.
• Design System Repo — Design Systems Gallery
• styleguides.io — Website Style Guide Resources.