Top 5 SCSS design-system Projects

Primer

4 12,448 8.7 SCSS

The CSS design system that powers GitHub

Project mention: Tremor – The React library to build dashboards fast | news.ycombinator.com | 2023-07-28

If you are looking for a dashboard system that is written in vanilla JS, I will be open sourcing my DevBoard in the next month or two. You can see it in action at https://devboard.gitsense.com/microsoft/vscode and learn more about the widget system at https://devboard.gitsense.com/microsoft/vscode?board=gitsens... Note the repo that is mentioned in the intro page hasn't been pushed to GitHub yet, but will be soon.
The server is a very simple node/express app and the front end is written in vanilla javascript. I also use GitHub's primer css (https://github.com/primer/css) and a heavily stripped down version of tabler's css (https://github.com/tabler/tabler)
Note, DevBoard is more geared towards hackers, so Tremor's is probably a much better fit if you are looking for an out of the box solution.
css

9 114 6.9 SCSS

Utility and component-centric design system leveraging Bootstrap 5 for rapid, responsive UI development. (by webpixels)
WorkOS

workos.com
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The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
design-system

1 94 9.8 SCSS

The Swiss Post Design System pattern library for a consistent and accessible user experience across the web platform. (by swisspost)
atlas-design

1 50 8.1 SCSS

Atlas Design System serves the Microsoft Learn design & engineering teams. We are a CSS-first design system that aspires to beautiful, accessible, themeable, reading-direction-agnostic components.
sass-system

1 0 4.7 SCSS

A style system generator and utility-first CSS framework
InfluxDB

www.influxdata.com
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Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-07-28.