UI Components

Not quite "frameworks", but tools for creating user interfaces with components or UI kits

Website	Description
Bit	Provides a huge library of reuseable UI Components for React, Angular, Vue, React Native. Also can be used for sharing UI Components among other team members
UILang	A minimal, UI-focused programming language for web designers
Medialoot CSS Components	Calendars, price grids and other UI components
Froala Design Blocks	Over 170 responsive design blocks ready to be used in your web or mobile apps
daisyUI	Tailwind CSS Components
Mui Treasury	An open-source project that provides a collection of ready-to-use components based on Material-UI.
Material Design For Bootstrap	Open source toolkit for building material design with Bootstrap
Photonkit	Desktop UI library for Electron
Flat UI	Minimal free user interface kit
Shards	A free and modern UI toolkit for web makers based on Bootstrap
Creative Tim	All types of UI libraries and kits including JS frameworks like React
Brumm Shadow Maker	An online tool to make css shadows
AdminLTE	Best open source admin dashboard & control panel theme
SpinKit	Simple CSS Spinners
Epic Spinners	CSS spinners collection with Vue.js integration.
Loading.io	Online service provider for creating simple animations, spinners, progress bar and more
Moving Letters	Animated Text with JavaScript and anime.js
CSS Layout	A collection of popular web layouts and patterns in pure CSS
CSS Grid Generator	An open-source project that allow users to quickly create dynamic layout based on CSS Grid.
Codyhouse	Kick-start your web projects with CodyHouse's front-end framework and library of accessible HTML, CSS, JavaScript components
Tailwind Starter Kit	Tailwind Starter Kit a beautiful extension for TailwindCSS, Free and Open Source
Tailwindtoolbox	Open source starter templates and components, a plugins directory and useful tools/utilities to kick start your Tailwind CSS project.
tailwindcomponents	A free repository for community components using TailwindCSS
sweetalert	SweetAlert makes popup messages easy and pretty.
sweetalert2	A beautiful, responsive, customizable, accessible replacement for javascript's popup boxes
tailblocks	Open source ready-to-use Tailwind CSS components.
Soft Components	A set of framework-agnostic web components based on neumorphic design.
Fast	An interface system that can be used with modern Web Frameworks such as React, Vue and Angular.
LottieFiles	Interactive animations in many formats like json,gif and mp4, libraries and plugins for Web & Mobile .
Tailwindow	Components created using Tailwind CSS utilities class, so it can be customized to make themes easily.
Kutty	A set of accessible and reusable prebuilt Tailwind components that are commonly used in web applications.
Tailwind Templates	A free collection of Tailwindcss Templates - tailwind components for rapid UI development.
Stitches	An HTML template generator using functional css.
Meraki UI Components	Beautiful Tailwindcss components that support RTL languages & fully responsive based on Flexbox & CSS Grid.
Daemonites Material Design For Bootstrap	Daemonite's Material UI is a cross-platform and fully responsive front-end interface based on Google Material Design developed using Bootstrap 4
Stitches	CSS-in-JS with near-zero runtime, SSR, multi-variant support, and a best-in-class developer experience.
Headless UI	Completely unstyled, fully accessible UI components, designed to integrate beautifully with Tailwind CSS.
Styled components	Build beautifully UI Components, for your applications & websites.
Figma Bootstrap 5 UI Kit	UI Kit comprising 300+ organized Bootstrap 5 components built with atomic design system & auto layout.