Open-source alternatives to React Native

Hippy is a cross-platform mobile framework that enables building applications for iOS, Android, and Web from a single codebase using web development technologies. It functions as a dynamic app framework, supporting runtime code updates and dynamic content delivery across platforms, and connects JavaScript application logic with native platform APIs through a JavaScript bridge. The framework distinguishes itself through its bridge-based native rendering approach, which serializes UI updates over a JSON message bus to a native host that maintains the real view hierarchy. It employs a component-

This project is a comprehensive instructional resource and tutorial guide for learning React and the broader frontend engineering ecosystem. It serves as a structured course covering the fundamentals of building user interfaces through component-based architecture. The project provides specialized guides on coordinating application data via Redux state management, integrating and mutating data using GraphQL and Relay, and building native mobile applications using a single codebase. It also includes a dedicated tutorial for verifying component behavior through unit testing, shallow rendering,

One is a full-stack, cross-platform React framework and multi-target rendering engine designed to build web and native applications from a single codebase. It utilizes a Vite-based build pipeline to manage shared components while providing a type-safe file-system router that automatically generates navigation definitions. The framework distinguishes itself by supporting a hybrid rendering strategy, allowing individual routes to be configured as static sites, server-rendered pages, or single-page applications. It employs platform-specific logic resolution and a shared Vite plugin to coordinate

This repository provides a collection of reference implementations for building mobile applications using the Kotlin Multiplatform framework. It serves as a practical guide for centralizing core application logic, data handling, and business rules into a single shared codebase while maintaining the ability to build native user interfaces for Android and iOS. The project demonstrates architectural patterns for managing state, persistence, and network synchronization across diverse mobile operating systems. By utilizing common source sets and platform-specific native interop, it enables develop

This project is a collection of reference implementations and code samples for building cross-platform user interfaces using the Xamarin.Forms framework. It provides practical examples for developing mobile and desktop applications from a single codebase targeting multiple operating systems. The repository focuses on architectural patterns and integration strategies, specifically demonstrating the use of MVVM to synchronize data between models and views. It includes samples for native platform integration, such as invoking platform-specific APIs and creating custom renderers to override defau

Dev-Cpp is a comprehensive development suite that serves as a C++ integrated development environment, a cross-platform application builder, and a visual UI designer. It provides a toolchain for writing, compiling, and debugging native C++ applications on Windows, while offering a framework to create native binaries for desktop, mobile, and IoT devices from a single codebase. The project distinguishes itself by integrating an embedded SQL database engine and a REST API development platform directly into the workflow. It includes an AI-assisted coding tool that leverages large language models t

LuaViewSDK is a cross-platform UI engine and framework that uses a Lua-based scripting engine to render native user interfaces across multiple mobile operating systems. It functions as a dynamic UI orchestrator, separating interface logic from the underlying operating system to allow for the creation of native views driven by scripts. The system features a bidirectional native scripting bridge for exchanging data and triggering functions between the script runtime and native platform APIs. It also includes a Lua game runtime capable of executing interactive graphics and lightweight games thro

Small is a cross-platform plugin framework and modularization tool designed to break monolithic mobile applications into independent components. It provides a modular mobile architecture that allows developers to split applications into decoupled plugins to reduce system complexity and memory usage across multiple operating systems. The framework includes a dynamic module loader for on-demand feature loading to improve startup times and a dependency injection service registry that connects feature modules to a central core for service discovery. The system provides a platform abstraction lay

MPX is a cross-platform framework designed to build applications for multiple mini-program ecosystems and the web from a single codebase. It utilizes a static transpilation pipeline to transform source code into platform-specific bundles, employing a single-file component system that encapsulates templates, logic, and styles. The framework provides a reactive state management system that automatically synchronizes application data with the user interface through computed properties and watchers. The project distinguishes itself through a robust build-time toolchain that supports sub-package p

Snowflake is a cross-platform mobile app starter designed for building iOS and Android applications using a single JavaScript codebase. It provides a pre-configured boilerplate to accelerate the initial development process for mobile applications. The project includes a Redux state management template for coordinating global application state and persisting user sessions, along with a REST API integration framework for communicating with remote or local servers via HTTP requests. It also features a localization system that maps user interface content into multiple languages based on the devic

react-native-blur provides cross-platform UI components for rendering native blur and vibrancy effects in mobile applications. It functions as a native-backed UI element that creates visual hierarchy and depth through blurred overlays and enhanced content contrast. The project includes an accessibility-aware component that automatically detects system preferences for reduced transparency and provides solid fallback colors. It utilizes native rendering to apply background blur and vibrancy layers, improving the legibility of foreground content. These components encapsulate platform-specific r

Eigen is a cross-platform mobile application and art marketplace client designed for discovering artists and exploring a curated database of fine art and gallery collections. It serves as a community art discovery tool and digital platform for connecting with art enthusiasts across different operating systems. The project implements a component-based mobile user interface that synchronizes a JavaScript thread with native platform views. It focuses on delivering a social mobile experience for sharing discoveries and interacting with a global art ecosystem. The application incorporates a high-

NativeScript is a cross-platform mobile development framework that enables the creation of native iOS and Android applications using JavaScript or TypeScript. It provides a direct bridge to native platform APIs, allowing developers to invoke native classes, methods, and properties directly from script code while maintaining full access to underlying mobile operating system features. The framework distinguishes itself through its direct native UI rendering, which maps declarative markup components to actual platform-native widgets rather than web-based views. This architecture is supported by

This repository is a curated collection of official Dart packages and Flutter plugins maintained by the framework creators. It serves as a centralized source of modular code libraries and verified extensions designed to provide standardized access to native device hardware and operating system APIs. The collection provides cross-platform UI component libraries that ensure consistent interface elements and widgets across different operating systems. These official plugins integrate standard features into applications through a set of maintained libraries. The project covers a broad range of c

Valdi is a cross-platform native UI framework that compiles declarative TypeScript code into native platform views. It functions as a declarative UI engine and multi-platform frontend toolchain designed to achieve high performance by avoiding web views. The framework features a native bridge binding tool that generates type-safe bindings between TypeScript and native languages, allowing direct access to platform APIs. It supports a hot-reload development workflow, enabling real-time updates to the user interface across platforms without requiring full project recompilation. The system includ

This project is a full-stack development framework designed for building cross-platform mobile applications that integrate generative language and image models. It provides a pre-configured boilerplate and a collection of tools to accelerate the creation of intelligent software, including support for interactive chat interfaces and visual content generation. The framework distinguishes itself by incorporating a server-side proxy layer that centralizes authentication and authorization, ensuring secure communication when interacting with external AI services. It also features a modular styling

f8app is a cross-platform mobile reference application implementation that serves as a technical architecture guide for building complex features in a production environment. It is built as a React Native mobile application using a component-based architecture to manage the user interface and application state. The project implements a dockerized backend environment, running a database, server, and dashboard as a group of coordinated containers to ensure consistent development environments. It further integrates a GraphQL data fetching system that uses a structured schema and compiler to ensu

nativescript-vue is a framework for building native iOS and Android applications using Vue components and a reactive state system. It functions as a cross-platform mobile UI library that renders platform-specific views instead of web views, utilizing a native mobile application bridge to connect Vue logic to NativeScript APIs for direct access to mobile hardware and OS features. The framework employs a reactive mobile component system to create high-performance screens and dynamic lists with automatic state updates. This architecture allows for the development of native mobile applications fr

Expo is a universal mobile framework designed to build native iOS and Android applications from a single codebase using web-standard technologies. It provides a comprehensive development environment that includes a unified runtime for testing, cloud-based infrastructure for compiling and signing native binaries, and automated tools for managing the entire mobile release lifecycle, including app store submission. The framework distinguishes itself through a plugin-based native configuration engine that programmatically modifies project files, allowing developers to integrate native modules wit

ReactXP is a framework for building cross-platform mobile and web applications from a single codebase using React. It provides a declarative interface that maps to different native implementation sets depending on the target environment. The project enables consistent visual experiences across operating systems through a flexbox-based layout engine, a virtual stack for navigation management, and a unified native-bridge API for accessing system services. It distinguishes itself with specialized capabilities for declarative animation orchestration, platform-specific logic resolution, and an aut

A framework for building Mobile cross-platform UI

gpui-component is a native desktop UI kit and component library built for the GPUI framework. It provides a collection of reusable user interface elements, a desktop layout engine for organizing application space, and a specialized data visualization library for rendering quantitative information. The project is distinguished by its high-performance rendering systems, including a virtualized data grid and list system designed to handle large datasets with low memory overhead. It also features a comprehensive data visualization toolkit for rendering charts, axes, and coordinate scales using li

This project is a cross-platform rendering engine and Dart runtime embedder. It functions as a hardware-accelerated graphics engine that composites and paints user interfaces across mobile, desktop, and web targets. The engine utilizes a hardware-accelerated rendering pipeline to drive high-frame-rate animations using GPU APIs such as Vulkan, Metal, and OpenGL. It incorporates an accessibility framework that maps user interface semantics to platform assistive technologies and screen readers. The system provides a platform abstraction layer for managing file and network I/O and incorporates a

Cordova CLI is a command-line interface that enables the development of native mobile applications using standard web technologies. It functions as a unified environment that transforms HTML, CSS, and JavaScript assets into installable binary packages for multiple mobile operating systems. By acting as a facade over platform-specific build chains, the tool automates the conversion of web-based source code into native applications. The system distinguishes itself through a modular plugin architecture that bridges web-based applications with native hardware capabilities, such as cameras and sen

This project is a cross-platform mobile development course and educational guide focused on building functional applications from a single codebase. It serves as a structured tutorial and textbook for learning the Flutter framework and the Dart programming language. The curriculum covers the full spectrum of mobile development, from basic UI construction and widget-based layouts to advanced architectural patterns for maintainability and scale. It provides instructional content on implementing business logic, networking, and native plugin integrations. The learning path emphasizes practical a

qBittorrent is a cross-platform desktop application designed for peer-to-peer file distribution. It functions as a BitTorrent client that manages the downloading and uploading of files across decentralized networks by utilizing a high-performance C++ library to handle protocol compliance and data exchange. The application distinguishes itself through an integrated, asynchronous event-driven architecture that supports remote management via an embedded web server. This remote interface allows users to control tasks and application settings from any location, secured by authentication, encryptio

Lynx is a cross-platform mobile framework designed to build applications using web technologies that render as native components. It functions as a native UI rendering engine, translating web-based layout and styling instructions into platform-specific views to ensure efficient performance and minimize layout recalculations. The framework utilizes a multi-threaded rendering pipeline that separates application logic from the UI thread, supported by incremental reconciliation to update only changed view elements. It employs just-in-time bytecode execution to optimize JavaScript performance and