The free UI style guide for designers, developers and AI coding agents: 67 design styles with live demos, color palettes, CSS and copy-paste prompts.
CSS Studio. Design by hand. Code by agent.
A visual CSS editor in your browser. Adjust styles with sliders and pickers, and your AI agent writes the changes to source.
18 Best CSS Libraries/Frameworks for UI/UX Designs 2024
Here are the 25 best CSS libraries/frameworks for UI/UX designs which make your frontend development more easier and productive with custom features.
Resources - Shenanigans
Simple bits of decorative CSS and HTML I put together that you can use on your own pages! Naturally, you can change their style to fit your own aesthetic.
una.im | Modern CSS theming with light-dark(), contrast-color(), and style queries
Combine three new CSS features to build fully adaptive themed components.
Web Interface Guidelines
Guidelines for building great interfaces on the web. Covers interactions, animations, layout, content, forms, performance & design.
Beautiful UI — Crafted primitives for AI-native interfaces
A small library of extremely crafted, copy-paste components for chat agents, thinking states, human-in-the-loop approvals, and everything agents need to talk to humans beautifully.
Apple Design Resources
Design apps accurately and quickly using official Apple design templates, icon production templates, color guides, and more.
Building a UI framework
Building a UI Framework Ian Hickson (ian@hixie.ch) — 2025 — First Edition — https://software.hixie.ch/ui-frameworks To leave comments, use the edit version. Introduction This document examines important design decisions for creating a new graphical UI framework. It was commissioned to answer the...
Awesome Generative UI - AI-Powered User Interface Generation Resources
Discover the best Generative UI resources: research papers, real-world cases, video tutorials, and open-source projects about AI-driven dynamic interface generation. Explore how LLMs like Gemini, Claude, and GPT are revolutionizing UI/UX design.
Popmelt — Design copilots for AI agents
Our Taste models encode design expertise and philosophy, giving AI agents instant access to a curated catalog of aesthetic knowledge. Unlike traditional templates and design systems, our imprints are AI-native and guided by universal principles. This means agents can apply them to any interface scenario, not just predefined layouts and elements. They're also customizable and extensible, letting you build quickly without falling into the cookie-cutter UI library trap.
The Layout Maestro by Ahmad Shadeed
Build any web layout with confidence. Learn practical CSS layout through visual lessons, interactive demos, and a proven layout mindset.
Radix UI
Components, icons, and colors for building high‑quality, accessible UI. Free and open-source.