Build Design Systems With Penpot Components
Penpot's new component system for building scalable design systems, emphasizing designer-developer collaboration.

My goal with Polypane is improving the workflow for developers and designers. The main focus is of course developing an excellent browser for developers and designers, but I’m also developing online tools that help out during development. Two of them online now are a CSS specificity calculator, and a color contrast checker. Both of them go way beyond what you expect from these types of tools.
CSS Specificity calculatorCSS
AI-driven updates, curated by humans and hand-edited for the Prototypr community