UI GitHub Repositories (2026) · Open Source Tools

Unstyled, accessible UI components for your design System. Works in React, Vue, Solid, and Svelte.

web development for the rest of us

Generative UI SDK for React

The native UI for Apple Containers and (o)MLX sandboxes, written in swift as a replacement for docker desktop

Create Apple style dimensional drawings of UI components.

The open source alternative to Framer, Webflow, Figma. A website builder where you design on a pixel-perfect visual canvas, create components, animations, manage cms and translations. Export to Next.JS code. Use our cloud or host locally on your computer.

🍭 Lobe UI - an open-source UI component library for building AIGC web apps

Local UI to run and train LLMs and diffusion models. Supports GGUF, MLX, Qwen3.8, DeepSeek-V4.1, MiniMax-H3, Gemma 4, FLUX and more.

Server-driven in-world UI and application framework for Minecraft Paper servers.

GPU-Rendered UI library built from scratch in Rust

A platform-aware UI toolkit for Compose Multiplatform, from components to native window integration.

Website for Meshery

A pixel-perfect dev portfolio and shadcn registry.

A cross-platform UI framework for .NET.

Compose Multiplatform, a modern UI framework for Kotlin that makes building performant and beautiful user interfaces easy and enjoyable.

Avalonia theme inspired by Semi Design

A cross-platform and lightweight, code-first .NET GUI framework aimed at NativeAOT.

Responsible AI Toolbox is a suite of tools providing model and data exploration and assessment user interfaces and libraries that enable a better understanding of AI systems. These interfaces and libraries empower developers and stakeholders of AI systems to develop and monitor AI more responsibly, and take better data-driven actions.

React UI kit for building actual apps.

Ivory is home for your database clusters — deploy, watch and fix them from one place, be it your browser, your phone or your AI agent. Open source, self-hosted, one Docker container and nothing to install on your hosts.