Microsoft fluent

UX guidelines, HTML/CSS framework, and Angular components working together to craft exceptional experiences

出品jira、Confluence、trello等众多知名互联网工具的公司

Material Design is a visual language that synthesizes the classic principles of good design with the innovation of technology and science.

Resources, tooling, and design guidelines for building interfaces with GitHub’s design system.

Invision 的项目，已发布多本设计相关电子书籍，推荐阅读，质量上程。