A highly customizable, low-level CSS framework that gives you all of the building blocks you need to build bespoke designs without any annoying opinionated styles you have to fight to override.
Atomize React is a UI framework that helps developers collaborate with designers and build consistent user interfaces effortlessly. It is based on Atomize design system for Sketch. Website: https://atomizecode.com/
Base UI is impressive Design System consist of 180 screens, supercharged with nested Nested Symbols and Predefined Text-Styles. It’s a great tool for playing around with flow and ideas, that activates design thinking like nothing else. With a Base UI Framework you access a huge arrangement of everything you need to design and prototype in Sketch.