Open-source alternatives to React Native Reanimated

LibGDX is a Java-based framework designed for cross-platform game development, enabling the creation and deployment of 2D and 3D games across desktop, mobile, and web environments from a single codebase. It functions as a comprehensive library that abstracts hardware-accelerated graphics, audio, input, and file system access, providing a unified interface for developers to manage game logic and application lifecycles. The framework distinguishes itself through a high-performance architecture that prioritizes efficiency and native interoperability. It utilizes a batch-oriented graphics pipelin

Kraken is a cross-platform UI framework and web standards runtime designed to build native applications using standard web markup and styling. It utilizes a Flutter-based rendering engine to process HTML and CSS, producing visually consistent user interfaces across mobile and desktop platforms. The system distinguishes itself by compiling the runtime to machine code and employing a synchronous rasterization pipeline to ensure animations and scrolling match the fluidity of native applications. It further integrates high-performance native components directly into a web-standard document object

This project is a cross-platform mobile animation library and UI thread animation engine designed to create high-performance animations by running JavaScript logic directly on the UI thread. It functions as a multi-threaded JavaScript runtime that allows code to execute across multiple threads to improve concurrency and prevent frame drops. The library focuses on enabling fluid user interface interactions and high-frame-rate transitions that remain stable regardless of the main processing load. It provides a system for offloading animation logic from the main thread to ensure smooth motion an

Animated is a declarative framework designed for creating high-performance, cross-platform interface movements. It provides a system for defining complex UI transitions through property interpolation, value mapping, and physics-based motion, allowing developers to orchestrate fluid visual effects without manual frame updates. The library distinguishes itself by offloading animation instructions to the native UI thread, ensuring consistent performance across mobile and web environments. It supports sophisticated motion design by linking multiple animation variables together, enabling coordinat

React is a JavaScript library for building user interfaces based on a component-driven architecture and unidirectional data flow.

react-native-skia is a cross-platform graphics framework that provides a high-performance 2D graphics engine for rendering shapes, paths, and images. It functions as a vector graphics engine and UI animation toolkit, allowing for hardware-accelerated visuals across mobile and web platforms. The project is distinguished by its integration of the Skia 2D graphics library, enabling a shader and filter pipeline for complex pixel-level effects. It supports the rendering of Lottie animations exported from After Effects and the execution of animations directly on the UI thread to maintain fluid moti

lottie-react-native is a React Native animation library and cross-platform vector animation engine used to render high-quality animations exported from After Effects via the Lottie file format. It functions as a Lottie animation player that allows mobile applications to display hardware-accelerated animations that maintain visual quality across different screen resolutions. The library serves as a dynamic animation controller, enabling the manipulation of playback, color filters, and text layers in real time. It provides the ability to change animation colors and visuals by applying filters t

This project is a cross-platform mobile animation library and component wrapper that enables movement and style transitions for mobile UI elements. It functions as a keyframe animation engine and a preset motion library, allowing developers to apply visual effects to components through a declarative API. The library provides a set of built-in entrance, exit, and alert effects for rapid implementation. It also supports the definition of custom motion sequences and unique keyframes to create repeatable, branded visual experiences. The system covers a range of motion capabilities, including the

This is a comprehensive library of code examples and reference implementations for building cross-platform user interfaces with Flutter. The project provides a collection of demo applications and guides designed to illustrate the implementation of design patterns, animation techniques, and testing workflows. The repository features specific demonstrations for native integration, including examples of embedding modules into existing native applications, using platform channels, and bridging native code with the framework. It also serves as an animation reference, providing implementations for

Floem is a native desktop UI framework and cross-platform toolkit for building high-performance user interfaces. It functions as a reactive UI library that uses a signal-based state management system to automatically synchronize the interface with data changes via lightweight observable primitives. The framework utilizes a GPU-accelerated rendering engine to ensure visual consistency and high performance across different desktop operating systems. It features a layout engine based on flexible box and grid models to create responsive screens that adapt to various window sizes. The toolkit cov

Spring is a Swift animation library and iOS view animation framework. It provides a spring physics animation engine designed to generate realistic, organic motion for user interface movements. The framework utilizes a declarative animation interface, allowing developers to define animation properties and behaviors without writing complex imperative code. This includes a declarative animation workflow where motion is configured through visual storyboards. The system manages iOS UI animations and Swift view transitions, specifically automating how views appear and disappear through triggered a

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

Vue Native is a framework that compiles Vue.js single-file components into React Native primitives, enabling developers to build native iOS and Android applications using Vue syntax. At its core, it provides a build-time compiler that transforms Vue components into React components, while hooking Vue's dependency-tracking reactivity system into React's component lifecycle to trigger re-renders when observed data changes. The framework wraps React Native's native module bridge so Vue components can access device APIs through Vue's reactivity system, and maps Vue's component syntax to React Nat

This is a keyboard interaction library and manager for React Native that provides smooth animations, gesture-based dismissal, and event tracking. It serves as a cross-platform keyboard event bus, ensuring consistent keyboard show and hide behavior between iOS and Android. The project features an interactive animation driver that links native keyboard frame events directly to animated values to bypass bridge round-trips. It enables interactive keyboard dismissal via swipe gestures and includes a keyboard preloading system to eliminate first-show latency and input lag. The library provides com

This repository is a collection of reference implementations and sample projects that demonstrate high-fidelity animations and gesture-driven interface patterns for cross-platform mobile frameworks. It provides a library of demonstration code and interactive components to showcase advanced user interface patterns. The project focuses on mapping complex touch inputs to fluid visual animations and coordinated layout changes. These examples serve as prototypes for developing and testing complex interaction patterns to determine the feasibility of specific design behaviors in React Native. The i

Pop is an animation library for iOS and macOS designed to manage property animations, value interpolation, and physics engines. It functions as a framework for linking animation engines to arbitrary object properties, extending beyond standard view attributes. The library features a physics-based animation engine that generates motion based on velocity, friction, and target values. This system enables the creation of spring and decay animations to simulate real-world dynamics. The project also provides tools for value interpolation using easing curves, display-link driven updates synced to s

This project is a charting library designed for the React Native framework, providing a collection of reusable components for rendering data visualizations within mobile applications. It functions as a cross-platform interface tool that maps coordinate arrays to graphical elements, allowing developers to display statistical information consistently across both iOS and Android environments. The library enables the creation of line, bar, and pie charts through a declarative component structure. By mapping JavaScript properties to platform-specific drawing primitives, it facilitates the integrat

react-native-interactable is a gesture physics library and interaction framework for React Native. It provides an animated gesture engine and a physics-based UI toolkit designed to create complex touch-based components such as swipeable rows and draggable cards. The project distinguishes itself through the simulation of physical properties, including spring tension, surface friction, and gravitational forces. It allows for the creation of gravity wells that attract or repel views and integrates simulated springs to pull elements toward specific coordinates with adjustable damping. The framew

This project is a jQuery plugin designed to detect and handle touch gestures on touch-enabled devices. It serves as a touch input handler and mobile gesture interface for identifying interactions such as swipes and pinches within a jQuery environment. The library distinguishes intentional gestures from accidental movements through configurable distance and time thresholds. It includes mechanisms to manage input interference, allowing for the exclusion of specific interactive child elements and the locking of default browser behaviors like scrolling or zooming during an active gesture. The sy

react-motion is a physics-driven animation toolkit and library for React applications. It provides a system for creating fluid user interface transitions by simulating natural spring movement to move elements toward destination values using stiffness and damping parameters. The framework manages the visual entry and exit of components as they mount and unmount within the document structure. It coordinates complex motion patterns, including staggered animations and fluid transitions for items being added, removed, or reordered within dynamic lists. The library covers a broad range of animatio

AndroidSwipeLayout is an Android UI library and custom view framework that enables the creation of layouts that reveal hidden action buttons when a user performs a swipe gesture. It functions as a gesture-based UI component that triggers callbacks based on the real-time position of the swipe. The framework is designed to support complex interaction patterns, specifically allowing for the nesting of multiple swipeable components within one another. The library covers mobile gesture interaction and custom view orchestration, providing tools to track swipe states and synchronize UI changes duri

A-Frame is a declarative 3D scene engine and WebXR framework used to build virtual and augmented reality experiences directly in the web browser. It utilizes an entity component system where generic objects are assigned behaviors through attachable components and lifecycle hooks. The framework allows the assembly of immersive environments using HTML-like markup to define geometries, lighting, and materials. It implements WebXR standards to ensure consistent playback across different hardware and browsers, including support for VR headsets, desktops, and mobile devices. The system covers a br

Tamagui is a cross-platform user interface framework designed to build high-performance, themeable applications that share logic and styling across web and mobile environments. It functions as a comprehensive design system orchestrator, providing a collection of type-safe components that compile to optimized atomic CSS for the web and native code for mobile platforms. By utilizing a build-time compiler, the framework eliminates runtime overhead, ensuring consistent visual output and interaction behavior regardless of the target platform. The framework distinguishes itself through its advanced

dynamics.js is a physics-based JavaScript animation engine designed to create spring and bounce animations. It utilizes the browser animation frame loop to ensure motion is synchronized with the refresh rate. The engine includes tools for animation debugging, allowing users to slow down or freeze active motions to tune parameters. It also features a timing mechanism that executes callbacks synchronized with the animation frame rate to prevent visual stuttering. The project provides a physics solver based on mass, stiffness, and damping constants. Additionally, it includes a utility for apply

PhotoView is a reusable Android UI component that provides a zoomable image view. It is designed to handle gesture detection, image scaling, and coordinate tracking for images within Android applications. The component enables users to enlarge and move images through pinch-to-zoom and panning gestures. It also includes capabilities for image tap detection to facilitate interactive responses. The library manages image interactions through matrix-based scaling and touch event interception. It includes a system for tracking image transformations and notifying observers when zoom or scroll posit

BouncyLayout is a Swift UI layout component and iOS UI component designed as a spring-based animation library. It serves as a layout container for iOS applications that applies spring-driven bounce animations to list cells during scrolling and resizing. The project focuses on creating tactile, bouncy movement for user interface elements through physics-driven animations. It enables custom layout animations and dynamic UI motion specifically for interactive list designs.

react-flip-toolkit is a coordinate-based transition framework and layout animation library for React. It uses a magic-move technique to calculate element positions, preventing jarring jumps during layout shifts through interpolation and physics. The library provides a spring-based motion engine that uses stiffness and damping settings to create natural movement for layout and style changes. It includes specialized tools for shared element transitions, which coordinate visual movements across client-side route changes to maintain continuity between different pages. The system covers layout tr