Lightning Design System
designsystem.tools
Blade Design System
Oxygen
Fig Mayo
UI-Patterns.com
The Design System Guide
Radix UI
Style Dictionary
Supernova
Specify
The Ultimate Design Systems Resources List
Components
Flapjack
Moon Design System
Twilio Paste
Adobe Design System
Conscious Style Guide
Picular
BrandColors
Zeroheight
Design System Checklist