This list is just getting started, feel free to contribute to it to help it get off the ground.
- Invisible Details of Interaction Design - rauno
- Visual Design Techniques - Anthony Hobday
- UI Detail Breakdowns: Switch · Shadow Borders - Derek Briggs
- UI Design Critiques - Brian Lovin
Find high quality fonts from great designers & foundries.
- SVG Repo - Open-licensed SVG Vector and Icons
- Font Awsesome - High quality icons, has been around for many years.
- the components gallery - component.gallery
- Adobe Spectrum
- Great documentation, like Color System and Design Tokens.
- A good place to start if thinking about building a design system.
- Carbon Design System
Developer tools oriented towards higher quality design
- Good things don't have to take time - via @adamwathan
More lists like this.