Angular Material vs GitHub Primer

Angular Material is a free library of Material Design UI components for Angular applications. Add it with the Angular CLI command `ng add @angular/material`, then choose a prebuilt theme or configure a custom theme. Setup can add global typography styles, the Roboto font, and Material Symbols. Schematics generate prebuilt pieces such as navigation, tables, and address forms. The Angular CDK supplies tools for authoring custom components around common interaction patterns. The Angular Components team describes the components as accessible and internationalized, with listed screen-reader combinations spanning Windows, macOS, iOS, Android, and Chrome OS. Supported browsers are the most recent two versions of Chrome, Firefox, Safari, and Edge. Angular Material and the CDK follow Angular’s release and support policy. The project focuses on UI components, not application layout. Shadow DOM is not officially supported, although the team aims to keep components working there. The plan is free, with an MIT license.

GitHub Primer is a free, open-source design system for designing and building GitHub interfaces. Its guidance covers product UI components, patterns, and design tokens for color, spacing, and typography. Primer Brand addresses marketing websites and other digital experiences. React documentation explains theming, recommended practices, and component extension. Primer also provides accessibility guidance and tools, along with Octicons, GitHub’s scalable icon set. Product UI documentation includes an MCP server page. Component status is identified as experimental, ready, or deprecated; ready components are described as mature with long-term support expected. Primer Web and Primer Primitives are available through the Primer Figma Community page, while GitHub’s Figma organization is limited to GitHub team members. The Primer Mobile Figma library is internal only. GitHub employees alone can contribute to Primer Web because of Figma’s open-source file handling. GitHub’s Design Infrastructure and Design Engineering teams maintain the CSS framework, documentation, tools, libraries, and component libraries.