# The Most Popular Enterprise Design Systems with Open-Source Code

> Explore popular enterprise design systems like Adobe Spectrum, IBM Carbon, and Material UI with open-source code. Discover modular architectures and active communities to enhance your projects.

- Repository: [Alex Pate/awesome-design-systems](https://github.com/alexpate/awesome-design-systems)
- Tags: listicle
- Published: 2026-04-12

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**The most popular enterprise design systems with publicly available source code include Adobe Spectrum, Atlassian Design System, IBM Carbon, Microsoft Fluent UI, Shopify Polaris, Salesforce Lightning Design System, Material-UI (MUI), Base Web, Ant Design, and PatternFly—all featuring modular architectures, comprehensive design tokens, and active contributor communities.**

Enterprise organizations rely on robust design systems to maintain visual and functional consistency across large-scale product ecosystems. The alexpate/awesome-design-systems repository curates the definitive collection of these systems, with each entry linking directly to its open-source codebase via oct