Open-source alternatives to Metroui

This project is an HTML email framework and compiler designed to build responsive emails using a high-level syntax that transforms into table-based layouts. It functions as an HTML-to-table compiler and CSS inliner, ensuring that simplified markup is converted into the complex nested structures and inline attributes required for cross-client compatibility. The framework features a responsive email grid system and Sass-based styling, allowing the use of variables to manage colors, typography, and spacing. These tools enable custom brand theming and the creation of fluid layouts that adapt to v

HyperUI is a dependency-free collection of responsive HTML layouts and pre-styled components designed for various web domains. It functions as a Tailwind CSS component library where users integrate standalone HTML snippets via a copy-paste distribution model to avoid package installation and framework overhead. The library features one-click markup copying from a pre-built component gallery. It includes specialized design systems, such as high-contrast neobrutalist styling with heavy borders, and visual tools for generating dark mode color palettes and harmonic typography scales. The compone

CoreUI Free Bootstrap Admin Template is a pre-built, responsive admin dashboard template built on Bootstrap 5 for constructing back-office interfaces. It provides a library of UI components with native wrappers for React, Vue, and Angular applications, alongside a Sass-based theming system for managing brand colors, dark mode, and design tokens via variables and CSS custom properties. The template includes a set of advanced form controls such as autocomplete, date pickers, and multi-step wizards with built-in validation, and supports switching the entire interface between built-in dark and li

This project is a React-based administrative template and UI kit designed for building dashboards. It provides a comprehensive collection of pre-styled layouts, an accessible component library, and a Sass-based UI framework for creating administrative interfaces. The template is specifically structured as an AI-optimized project, utilizing coding patterns and organization designed to help AI assistants generate consistent, production-ready React code. It features a flexible styling system using Sass variables and CSS custom properties to support customizable light and dark themes. The kit co

Astrowind is a high-performance site framework and bootstrapping tool designed for building marketing sites, professional portfolios, and high-conversion landing pages. It utilizes a utility-first CSS architecture and a component-based UI library to assemble responsive websites. The project specializes in conversion rate optimization through targeted templates for lead generation, product sales, subscription captures, and pre-launch teasers. It includes specific infrastructure for static blogging, utilizing markdown-based content modeling and rendering for long-form articles. The framework c

vue-admin is a Vue.js admin dashboard template and customizable admin theme. It serves as a starter kit and application scaffolding for building administrative interfaces and enterprise web interfaces. The project utilizes the Element UI component framework to provide a set of pre-designed interface elements for data-driven web applications. It includes a configurable system for custom theme implementation, allowing the modification of color variables and style sheets to align with specific brand guidelines. The framework covers administrative dashboard development through component-based UI

This project is a JavaScript UI component library and frontend utility toolkit. It serves as a web modal framework and popup library, providing a specialized system for rendering interactive dialogs, overlays, and layered interfaces over web page content. The library is distinguished by its comprehensive set of overlay tools, including alert dialogs, confirmation prompts, and the ability to embed external content via iframes. It also features a responsive twelve-column grid system for cross-device layout compatibility and an internal modular dependency management system for on-demand loading

Bootflat is a front-end component library and CSS framework extension that implements a flat-design aesthetic for web application styling. It provides a set of reusable interface elements and a mobile-first grid system to facilitate responsive web design. The project integrates design and development through a PSD-driven workflow, providing professional Photoshop component sets and curated color palettes for interface prototyping. Visual customization is handled via variable-based theme overrides for colors and fonts. The library covers a broad range of UI components, including form elements

Vuestic UI is a Vue 3 component library providing a collection of pre-made user interface elements. It serves as a responsive UI framework and a themed component system designed to speed up frontend development and maintenance. The toolkit features a centralized configuration system for global styling and dynamic branding, including a built-in dark mode. It includes an internationalized interface toolkit with native support for localization and translating application content for multiple languages. The library provides a set of accessible web components that meet accessibility standards for

Framework7 is a mobile user interface framework and single-page application system designed to build responsive web applications with native iOS and Android appearances. It provides a comprehensive library of pre-styled components and a layout engine to create native-style user interfaces across multiple platforms. The framework utilizes a platform-aware theming system that adapts visual styles and color schemes based on detected device settings. It incorporates native mobile behaviors through a dedicated UI kit, including specialized interaction patterns such as pull-to-refresh and swipeable

North is a responsive web design methodology and Sass-based CSS architecture framework. It provides a system for building mobile-first user interfaces using fluid grids and progressive enhancement techniques to ensure a consistent experience across different browser capabilities and screen sizes. The project features a standardized CSS naming system that uses Sass mixins to programmatically generate class names, distinguishing between components, layouts, and states. It also functions as a frontend project scaffolding tool, providing a generator to bootstrap new environments with pre-configur

Argon Design System is a frontend template collection and UI component library built on Bootstrap 4 for rapid web application development and prototyping. It structures user interface elements into self-contained, reusable blocks that combine with pre-built page templates and stylesheet variable customization. The framework includes pre-styled views for credential authentication, password recovery, user registration, and profile creation layouts. It supports external identity provider integration and user session persistence alongside interactive JavaScript behaviors such as tooltips, modals,

vueAdmin is a framework for admin dashboard development and internal tooling, providing a foundation for building management interfaces and back-office panels. It serves as a bootstrapping tool to generate pre-structured project layouts, allowing for the creation of administrative interfaces without building dashboard shells from scratch. The project focuses on visual customization, enabling users to adjust the appearance of the interface through CSS variables and external theme packages. The system is built as a single-page application using a component hierarchy, client-side routing, and c

Varlet is a Vue 3 material design component library and cross-platform UI framework. It provides a collection of reusable interface elements based on Material Design 2 and 3 standards for building responsive web applications. The library features integrated support for internationalization and multi-language content localization. It includes a theming system that utilizes CSS variables to enable dark mode, color scheme toggling, and custom branding. The toolkit is designed for server-side rendering to improve initial page load speeds and search engine optimization. It includes responsive com

Spectre is a comprehensive CSS framework and UI utility toolkit designed for building responsive web interfaces. It functions as a CSS component library that provides pre-styled interface elements and helper classes to facilitate frontend UI development. The framework is distinguished by a pure-CSS component architecture that avoids dependence on external JavaScript runtimes. It utilizes a SASS-based build pipeline that supports class prefixing, stylesheet pruning, and a variable-based theme system for creating custom design systems. The project covers a wide range of layout and interface ca

Papercss is a CSS UI framework and document-style design system used to build responsive web page layouts. It functions as a Less-based CSS library that applies a paper-like aesthetic and structured typography to give web pages the appearance of physical documents. The project also incorporates a utility-first CSS library model for rapid styling. The framework is distinguished by its ability to automate visual decorations, such as applying rotating border styles and shadow effects to child elements. It utilizes a Less-based variable system and modular stylesheet compilation, allowing users to

Leptos is a full-stack Rust web framework designed for building reactive applications that share logic and types between the server and the browser. It provides a comprehensive toolkit for developing web interfaces where specific DOM nodes update automatically in response to changes in underlying reactive signals, rather than re-rendering entire component trees. The framework distinguishes itself through a fine-grained reactivity model that tracks dependencies at the individual data point level. It utilizes compile-time template transformation to convert declarative HTML-like syntax into opti

al-folio is a Jekyll academic theme and portfolio generator designed for researchers and professors to build professional homepages, lab sites, and research profiles. It functions as a system for creating a digital academic identity, combining a website template with tools for scientific and academic publishing. The project distinguishes itself through specialized scholarly workflows, such as automated publication lists and bibliography management driven by BibTeX files. It provides specific layouts for digital academic CVs, research portfolios, and the rendering of mathematical expressions a

Tabler is a comprehensive UI framework designed for building responsive, data-heavy administrative panels and enterprise web applications. It provides a unified collection of pre-styled components and layout patterns that allow developers to construct complex dashboard interfaces using a consistent design system. The project distinguishes itself through a metadata-driven approach to interactivity, where complex component behaviors and state transitions are initialized by parsing configuration attributes directly from HTML elements. This allows for the creation of interactive interfaces withou

Cycle.js is a functional reactive web framework and observable-driven UI library used for building web applications. It employs a reactive stream architecture that treats the document object model and side effects as continuous data streams, coordinating state and logic through a functional cycle. The framework distinguishes itself by isolating side effects from core logic using a system of drivers. This architecture maps external events to internal commands through a symmetric input-output pipeline, ensuring that the application remains a cycle of pure functions. The project provides capabi

Yui3 is a JavaScript UI framework and frontend application framework designed for building interactive web applications and dynamic user interfaces. It functions as a component-based UI library that organizes interface elements into reusable, modular units with encapsulated state and behavior. The framework includes a module-based loading system that resolves and executes scripts on demand through a dependency-aware mechanism. It provides a DOM abstraction layer to standardize cross-browser interactions and a pub-sub event bus for decoupled communication between independent modules. The tool

Vue Storefront is a composable commerce platform designed to decouple the presentation layer from backend systems. By providing a headless frontend framework, it enables developers to build high-performance, mobile-first digital storefronts that remain independent of specific commerce engines, payment providers, or content management systems. The platform distinguishes itself through a modular architecture that uses standardized integration adapters to aggregate data from disparate services into a unified layer. This approach allows businesses to modernize legacy infrastructure or manage comp

Bootstrap is a comprehensive, mobile-first CSS framework designed for building responsive web interfaces. It provides a standardized library of reusable UI components, such as navigation bars, modals, and forms, alongside a robust grid system that ensures consistent layout alignment across diverse viewport sizes. By establishing a baseline through browser normalization and standardized typography, the project enables developers to create accessible, cross-browser compatible web applications. The framework distinguishes itself through a modular Sass-based architecture that allows for deep cust

Light Bootstrap Dashboard is a framework for constructing administrative interfaces and management backends. It provides a collection of pre-styled components and responsive layouts designed to facilitate the development of custom web applications and internal tools. The project distinguishes itself through integrated data visualization capabilities, allowing for the rendering of interactive charts and graphs to track business metrics, sales trends, and user engagement patterns. It includes specific tools for monitoring campaign performance and system status, supported by an event-driven noti

Dopefolio is a customizable developer portfolio template designed for software engineers to showcase technical skills, project galleries, and detailed case studies. It is a responsive, multi-page static site featuring a central homepage and dedicated detail pages for individual technical project breakdowns. The template utilizes a CSS variable theming system that allows for instant site-wide updates to primary colors and visual styles. Its structure is optimized for search engines, employing a lean HTML hierarchy to ensure fast load times and high visibility. The project covers the presentat

Topcoat is a CSS UI framework and component library used for building web application interfaces. It serves as a design system implementation that provides a set of reusable styled elements and layout primitives to ensure visual consistency across web pages. The system utilizes a BEM-based styling architecture to manage specificity and prevent style leakage. It combines a utility-first CSS library for common layout and spacing needs with a responsive CSS grid that adjusts based on viewport width. The framework covers front end styling, responsive web development, and rapid UI prototyping. It

Seed is a frontend framework for building single-page applications using Rust and WebAssembly. It provides a virtual DOM rendering engine and a component-based UI library to construct modular, reusable interface elements. The framework implements a unidirectional data flow model based on the Elm architecture to ensure type-safe state management and predictable state transitions. It utilizes compile-time macros to transform declarative UI definitions into efficient instructions for the browser. The project covers a broad range of web capabilities, including application routing, content intern