Open-source alternatives to RoundedImageView

android-crop is an Android image cropping library and image picker. It provides a reusable view component for selecting and cropping rectangular areas of images within mobile applications. The project includes an interface for launching the system gallery to select photos and a visual tool for users to manually adjust image framing. It manages the process of extracting specific regions of a bitmap and discarding the surrounding pixels.

Ticker is a custom Android UI component that implements rolling character animations to simulate mechanical odometer displays. It provides a scrolling text view designed to animate transitions between different strings using vertical motion. The component utilizes a custom drawing loop and character-array sequence mapping to control the vertical scrolling path. It supports wrapped animation paths to create seamless loops and includes mechanisms to handle translation offsets when transitioning between strings of varying lengths.

This project is a customizable image carousel component for Android applications. It provides a rotating banner slider built on ViewPager2 that supports automatic playback and custom page transformation effects. The component distinguishes itself through flexible visual customization, allowing for adjustable pagination indicators and the application of zoom, rotation, or depth effects during page transitions. It features a timing mechanism for automatic content rotation that synchronizes with the system lifecycle to optimize resource usage. The library covers a broad range of UI capabilities

This project is a technical guide and implementation library for advanced visual effects and hardware-accelerated animations using the Core Animation framework on iOS. It provides a comprehensive reference for creating high-performance motion graphics, custom graphic rendering, and the construction of 3D engines using perspective transforms and Z-axis manipulation. The collection distinguishes itself through a deep focus on GPU rendering optimization and graphics performance. It covers advanced strategies to maintain high frame rates, such as reducing offscreen rendering via shadow path optim

android-gif-drawable is a rendering library for displaying and controlling animated GIF images within Android image views and drawables. It provides a custom drawable implementation for frame-based animations, a playback system for seeking and looping, and a metadata extractor for retrieving technical properties such as frame counts and loop settings. The library enables the synchronization of a single animation instance across multiple views to ensure consistent playback. It supports loading GIF data from various sources, including assets, resources, URIs, byte arrays, files, and input strea

BigImageViewer is an Android image zooming library and UI component designed for displaying high-resolution images with pan and zoom capabilities while maintaining low memory usage. It functions as a unified loading wrapper that integrates with third-party providers such as Glide, Picasso, and Fresco to fetch and cache images from network or local sources. The library includes an animated image renderer that supports GIF and WebP formats through header-based detection. It facilitates image gallery navigation using shared element transitions to create smooth visual movement between thumbnails

This is a custom Android view designed for rendering high-resolution images using subsampling and tiling to prevent memory overflows. It serves as an interactive image component that supports pinch-to-zoom, panning, and double-tap animations. The project is distinguished by its rendering engine, which loads low-resolution previews and high-resolution tiles to enable the efficient navigation of massive image files. It includes a coordinate mapper that converts screen touch points into raw image pixel coordinates and vice versa during scaling and panning. The view provides a broad set of capab

uCrop is an Android library designed for cropping, rotating, and scaling images within mobile applications. It provides a reusable interface component that allows users to manipulate photos through touch gestures, enabling precise control over visual composition and aspect ratios. The library distinguishes itself by offering extensive customization of the editing interface, allowing developers to adjust colors, frame shapes, and widget visibility to align with specific application design languages. It handles image processing tasks by managing quality, compression formats, and output dimensio

Android-Universal-Image-Loader is an image loading library for Android applications designed to download, cache, and display images. It functions as a bitmap cache manager and processing framework that handles the retrieval of assets from remote URLs or local files. The library includes specialized utilities for extracting static frames from video files to generate thumbnails. It also provides a framework for applying visual transformations to loaded images, such as circular crops and rounded corners. The system manages performance through a two-tier caching hierarchy using both memory and d

Android ImageView widget with zoom and pan capabilities

Android ImageView that supports different radii on each corner.

A library for supporting custom shaped ImageView(s) using SVGs and paint shapes

Android ImageViews animated by Ken Burns Effect

Pixi.js is a high-performance 2D graphics engine used to render interactive animations, sprites, and visual effects in web browsers. It functions as a WebGL 2D rendering engine and HTML5 graphics library designed to produce high-performance two-dimensional visuals. The project operates as a 2D sprite framework and a web-based visual effects engine, providing tools to apply filters, blend modes, and masks to real-time graphics. It also serves as an interactive web canvas API for handling multi-touch and mouse input to build responsive graphical user interfaces. The framework covers a broad se

This project is a cross-platform graphics and compute framework that provides a unified, hardware-agnostic abstraction layer for rendering and parallel processing. It enables developers to build high-performance applications that execute consistently across diverse operating systems and hardware backends, including Vulkan, Metal, and DirectX. By mapping high-level graphics commands to native APIs, it serves as a portable foundation for both real-time 3D rendering and general-purpose GPU computing. The framework distinguishes itself through a robust architecture that supports both native deskt

L7 is a WebGL-powered geospatial visualization engine and browser-based GIS engine designed for high-performance rendering of large-scale 2D and 3D spatial datasets. It functions as a geographic data visualization library that leverages hardware acceleration to display massive datasets and heatmaps within a web browser. The engine features an abstracted basemap integration layer that decouples data visualization from the underlying map provider, allowing for the use of various map providers or offline deployments. It employs a system for visual variable mapping to translate numeric and catego

AndroidNote is a technical knowledge base and reference resource for Android development. It provides comprehensive guidance on application architecture, custom view development, and advanced graphics programming. The project is distinguished by its depth in visual implementation, covering pseudo-3D perspective projections via virtual cameras and complex 2D rendering using Bézier curves and PorterDuff color blending. It also provides detailed methodologies for app modularization and the management of internal libraries through private Maven repositories and JitPack. The reference surface ext

ggez is a 2D game framework for the Rust programming language. It provides a hardware abstraction layer for accessing keyboard, mouse, sound, and graphics hardware, alongside a dedicated game loop manager that synchronizes input processing, state updates, and frame rendering for real-time applications. The framework includes a hardware-accelerated rendering engine for drawing sprites, shapes, and text using shader programs. It also features a resource management system that uses a filesystem abstraction to load and manage game assets from physical directories or compressed archives. Addition

This project provides a containerized runtime for Android emulator virtualization, allowing virtual Android devices to run within isolated container environments. It is designed to support headless emulation and device orchestration for use in continuous integration and development pipelines. The system differentiates itself by implementing GPU hardware acceleration via passthrough to improve graphics rendering performance. It also utilizes external SDK mounting and volume-mapped state persistence to reduce image size and maintain emulator data across restarts. The environment supports remot

Gameplay is a high-performance C++ game engine and cross-platform framework designed for developing 2D and 3D interactive games. It functions as both a 3D graphics engine for rendering environments and a 2D game development kit for creating sprite-based mechanics. The framework provides a cross-platform abstraction layer to ensure that game logic and graphics run across various hardware and software platforms using a shared codebase. The engine implements a hardware-accelerated rendering pipeline and component-based game logic to separate data from behavior. It utilizes a native C++ impleme

GPAC is an open-source multimedia framework built around a pluggable filter graph pipeline, where modular processing units called filters connect into a directed graph to handle media workflows. At its core, the framework centers all media packaging and manipulation on the ISO Base Media File Format (ISOBMFF), with specialized tools for reading, writing, fragmenting, and encrypting MP4 and related containers. It also provides a declarative scene graph composition system for describing interactive multimedia scenes using MPEG-4 BIFS, X3D, SVG, or VRML syntax, alongside a hardware-accelerated re

This is a Kotlin Multiplatform UI framework for building consistent user interfaces across desktop, web, and mobile platforms using a single codebase. It functions as a declarative framework that enables the creation of shared UI components that run across multiple target environments. The project includes a cross-platform desktop toolkit for managing native window features, system notifications, and hardware acceleration. For web targets, it provides a declarative interface library and a rendering engine that executes via WebAssembly to achieve high-performance execution in browsers. The fr

Lenia is a scientific research tool and computational framework for modeling, visualizing, and analyzing artificial life. It functions as a continuous cellular automata engine that simulates emergent biological patterns using continuous space-time grids and kernel-based convolutional dynamics. The system leverages a GPU-accelerated simulation framework to perform parallel tensor computations and massive grid updates in real time. It includes hardware-accelerated 3D rendering to visualize high-dimensional cellular structures and their structural complexity. The platform provides capabilities

Cesium is a JavaScript geospatial visualization library and 3D globe engine designed to render world-scale environments and precision spatial data. It functions as a web-based mapping tool that displays hardware-accelerated 3D globes and 2D maps directly in a browser without requiring external plugins. The project operates as a 3D tiles renderer, utilizing the 3D Tiles open standard to stream and display large-scale geospatial datasets. It enables the visualization and analysis of high-accuracy spatial information across global environments. The library covers a broad range of capabilities,

DanmakuFlameMaster is a high-performance rendering engine for displaying scrolling bullet comments on Android devices. It functions as a graphic engine that manages the lifecycle of on-screen comments, from parsing raw data to final visual display. The project is distinguished by its use of hardware-accelerated surface views and multi-core parallel processing to maintain smooth frame rates during high-volume content delivery. It employs a pre-caching layout engine to calculate text dimensions and motion paths before they are displayed on the screen. The system includes a rule-based visibilit

BGABanner-Android is a UI library for Android providing customizable sliding image galleries and paginated sliders. It functions as a wrapper for ViewPager2, integrating navigation controls and the ability to render image banners that load content from the network. The library features auto-scrolling capabilities with looping sequences that can pause or resume based on user touch interactions. It includes configurable page indicators, such as dots or numbers, and supports custom transition animations to modify the visual effects when switching between views. The component manages banner inte

Pixel is a 2D game library and graphics engine for the Go programming language. It provides a hardware-accelerated renderer for drawing sprites, geometric shapes, and text, utilizing an optimized system of batching and transformation matrices. The project functions as a comprehensive toolkit for two-dimensional interactive applications, combining a graphics engine with a 2D vector math library for affine transformations and coordinate space projections. It includes a dedicated input manager that tracks keyboard presses and mouse movements using a polling-based system rather than asynchronous