Open source. Open possibilities.

Ionic is an open-source cross-platform app development toolkit for building native-quality iOS, Android, and Progressive Web Apps using JavaScript, HTML, and CSS, with native support for Angular, React, and Vue.

A curated awesome list of Flutter resources, featuring libraries, UI components, tutorials, articles, videos, and open-source apps.

Flutter is Google's open-source SDK for building fast, beautiful apps for mobile, web, and desktop from a single codebase, featuring hot reload, rich widgets, and native performance.

YTDLnis is a free, open-source Android audio/video downloader built on yt-dlp, supporting 1000+ websites, playlists, scheduling, custom commands, cookies, subtitle/metadata embedding, SponsorBlock removal, and plugin-based runtime management.

Material Design for Bootstrap is a free UI kit offering 700+ components, themes, and templates for building responsive, mobile-first websites. Available for jQuery, Angular, React, and Vue under MIT license.

TW Elements is an MIT-licensed component library for Tailwind CSS, offering 500+ interactive UI components and 117+ design blocks with dark mode support, theming options, and quick installation for personal and commercial use.

A documentation framework built on MkDocs: write in Markdown and produce a searchable, customizable static site in minutes, with responsive layouts, 60+ languages and MIT licensing.

Google's official Material Design icon repository, containing the current Material Symbols variable icons and the classic Material Icons set, with multiple styles, web fonts, SVG and npm packages.

Vuetify is an MIT-licensed Vue UI component framework offering handcrafted, responsive components with theming, SASS customization, Vite tree-shaking and 42+ language support.

Varlet is a Vue 3 component library based on Material Design 2 and 3, offering 70+ general-purpose components that work on both mobile and desktop, with theming, internationalization, SSR and TypeScript support.

Unofficial Flutter mobile client for Rybbit, an open‑source privacy‑friendly web analytics platform. Offers multi‑site dashboards, real‑time visitor counts, performance metrics, events, goals, session replay, error tracking, dark/light theme and 11 languages. Runs on Android 5+ and iOS 12+.

LastChat is a feature-rich Android AI assistant forked from RikkaHub, offering multi-provider chat, RAG memory, multimodal input, built-in Python/JS engines, and local-first privacy.

Framework7 is a free, open-source HTML framework for building iOS and Android apps with native look and feel, plus desktop and web apps, using web technologies.

Seal is an open-source Android video and audio downloader built as a GUI for yt-dlp, supporting downloads from hundreds of video platforms with metadata embedding, subtitles, and playlist support.

react-md is an accessible React component library built from the Material Design guidelines with Sass. It offers low-level customizable components, global and component-level theming with CSS variables, light/dark/system themes, right-to-left language support, and is written in TypeScript.

Material Web (@material/web) is a library of web components implementing Google's Material 3 design system, for building accessible web apps. It ships from npm and can be loaded directly from a CDN. Note: the project is in maintenance mode pending new maintainers.

Material UI is an MIT-licensed React component library offering an independent implementation of Google's Material Design system, maintained by MUI with over a decade of open-source development and a wide set of reusable UI components.

Materialize is a modern CSS framework based on Material Design principles, providing a set of tools to create responsive and visually consistent user interfaces.

App Manager is a libre Android package manager and app viewer with Material 3 UI. It inspects app components, permissions and trackers, installs or backs up APKs, and offers root/ADB tools like freezing apps and editing shared preferences.