Base UI vs. React Bootstrap vs. Untitled UI vs. python-sql Comparison Chart

​Base UI is a library of headless ("unstyled") React components and low-level hooks, offering developers complete control over their application's CSS and accessibility features. Extracted from Material UI, these components are now available as a standalone package, providing the same robust engineering without implementing Material Design. Base UI includes prebuilt components with production-ready functionality and low-level hooks for transferring that functionality to other components. With Base UI, developers can rapidly build on top of foundational components using any styling solution they choose, no needing to override any default style engine or theme. It abstracts away aspects of UI development like accessibility, cross-browser compatibility, and event handling, allowing developers to focus on design implementation. Base UI's skeletal components give a sturdy foundation to apply custom styles with ease, supporting styling methods such as vanilla CSS, Tailwind CSS, etc.

Untitled UI is the world’s largest Figma UI kit, React component library, and icon system, offering designers and developers everything needed to design and build modern interfaces at speed. The Figma library features over 900 global styles and variables for color, typography, and effects, more than 10,000 meticulously crafted components and variants, 420 ready‑to‑use desktop and mobile page examples, and 4,600 neutral icons and logos, fully integrated into one design system. On the development side, Untitled UI React provides an open‑source collection of production‑ready components built with React v19.1, Tailwind CSS v4.1, TypeScript v5.8, and React Aria, ensuring type safety, accessibility (keyboard navigation and screen‑reader support), and lightning‑fast performance without lock‑in. AI‑ready Lovable and bolt.new kits enable instant prototyping with simple prompts, while seamless Figma previews and consistent styling across both platforms.