Open-source alternatives to Picasso

Coil is an image loading and caching pipeline designed for Android and Compose Multiplatform applications. It functions as a comprehensive loader, caching engine, and rendering utility that asynchronously fetches and displays images from network URLs, local storage, and multiplatform resource systems. The library distinguishes itself through a flexible fetcher-decoder pipeline and an interface-driven component registry, allowing for the integration of custom networking clients and decoders. It provides specialized support for rendering scalable vector graphics, animated formats such as GIF an

AlamofireImage is an image downloading and caching library designed as an extension for Alamofire. It provides a serialization framework to convert network responses into image objects and a memory-based caching system to reduce redundant network requests. The project features a variant-aware asynchronous cache that stores both original images and their filtered versions separately. It includes tools for animating the replacement of placeholder images with downloaded content through various transition effects. The library covers image acquisition through parallel downloading and prioritized

Kingfisher is a library for downloading, caching, and displaying remote images in Swift applications. It provides an integrated framework that manages the entire lifecycle of remote assets, from initial network retrieval to final rendering within user interface components. The library distinguishes itself through a two-tiered storage mechanism that balances rapid access via volatile memory with persistent availability through disk caching. It features a modular processing pipeline that allows for dynamic image transformations, such as applying filters or geometric modifications, during the re

SDWebImage is an asynchronous image downloader and caching library for iOS and macOS applications. It provides a core identity centered on a network utility for fetching images from URLs, a tiered memory and disk caching engine, and a processing framework for decoding and encoding media. The library features a specialized rendering engine for animated formats such as GIF and WebP, including support for progressive animation rendering. It distinguishes itself through a plugin system that allows for extended image format support and the ability to replace default loading or storage logic with c

AndroidNetworking is an HTTP networking library for Android that handles the full lifecycle of network communication, from sending requests to parsing responses and caching data. It provides a unified interface for executing GET, POST, PUT, DELETE, HEAD, and PATCH requests, with support for both synchronous and asynchronous execution, and includes built-in JSON response parsing that converts server responses directly into Java objects or lists. The library distinguishes itself through a set of integrated capabilities that go beyond basic request execution. It manages file downloads and upload

Ion is an asynchronous HTTP client library for Android that handles network requests, JSON parsing, image loading, and file downloads. It provides a fluent builder pattern for constructing requests and supports automatic JSON deserialization into Java objects using Gson, along with in-memory image caching and multipart form-data encoding. The library distinguishes itself through its support for request cancellation via Future objects, allowing individual or bulk cancellation of in-flight requests to avoid wasted bandwidth and stale callbacks. It also includes proxy-aware request routing for d

This is a Glide image transformation library for Android that provides a collection of image processing filters and shapes. It functions as a suite of hardware-accelerated tools for image cropping, artistic filtering, and transformation pipeline management. The project distinguishes itself through an image filter pipeline that allows for sequential transformation chaining, enabling multiple visual effects and color modifications to be applied in a single pass. It utilizes GPU acceleration to implement artistic effects such as pixelation, sketching, and blur. The library covers a broad range

FastImageCache is an iOS image caching library that provides a persistent disk-based image store. It utilizes a persistent bitmap cache to store images in uncompressed formats and incorporates an image pre-processing pipeline to optimize assets before they are committed to storage. The library optimizes rendering performance by using memory-mapped image tables for constant-time retrieval and byte-aligned data layouts to prevent memory copies. It organizes images of identical dimensions into shared tables and manages disk space through a least-recently-used cache eviction system. The project

PINRemoteImage is an image downloading and caching framework for iOS. It functions as a remote image loader and multi-threaded manager designed to fetch images from URLs and render them into user interfaces. The project includes specialized decoders for rendering GIF and Animated WebP formats. It also features a progressive JPG renderer that displays scans with blur effects to improve perceived loading speed on slow connections. The library manages concurrent download tasks with request deduplication and utilizes a hybrid memory and disk caching system. It handles high-resolution asset scali

🚀 A Complete Fast Android Networking Library that also supports HTTP/2 🚀

This project is a comprehensive sample library and implementation guide for ASP.NET Core. It provides a collection of practical examples and projects that demonstrate how to build web applications, RESTful APIs, and high-performance services. The repository focuses on a variety of architectural patterns, including the development of Minimal APIs, contract-first gRPC services, and real-time communication using WebSockets and Server-Sent Events. It includes detailed implementations for user identity and security, such as token-based authentication and CSRF protection. The codebase covers a bro

This is a high-performance image component and native caching library for mobile applications. It provides tools for image optimization and asset preloading to reduce visual flicker and increase loading speeds. The project differentiates itself through a mobile asset preloader that downloads remote images into a local cache before they are requested. It also includes a system for assigning loading priority levels to ensure critical visual assets are fetched first and supports remote asset authentication by attaching custom HTTP headers to requests. The library covers a broad range of capabil

Nuke is an image loading system designed to fetch, cache, and render images and short video clips within a user interface. It functions as an asset caching engine and a resumable download manager to handle the retrieval of remote media files. The framework includes a request priority manager to coordinate duplicate requests and order loading based on visual importance. It employs an image prefetching strategy to load visuals into memory before they are required and uses an LRU asset cache to reduce network traffic. The system covers broader capabilities in traffic management and data storage

xUtils3 is an integrated Android toolkit that combines HTTP networking, image loading, ORM database queries, and view injection into a single cohesive library. It provides annotation-driven view binding and event handling, eliminating manual view lookups by scanning Java annotations at runtime through reflection. The library includes a fluent LINQ-style ORM query builder for constructing type-safe database queries with filtering, grouping, aggregation, and pagination operations. Its HTTP networking layer supports multiple verbs, cookie management, and pluggable response parsing for structured

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

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

Imageflow is a high-performance image manipulation library and composition engine available as a C-compatible library, a command-line image processor, and a dynamic image processing server. It provides the means to decode, encode, and apply complex visual transformations to images through programmatic interfaces, JSON job files, or on-the-fly URL query strings. The system distinguishes itself through a graph-based processing pipeline that allows for single-pass multi-format encoding, generating multiple image sizes and formats from a single decode to reduce overhead. It further features a res

This project is a Python bio-imaging toolkit and analysis suite designed for processing and analyzing microscopy and medical images. It provides a collection of tools for image quantification, medical image segmentation, and general bio-imaging workflows. The suite includes specialized capabilities for quantifying biological data, such as measuring neuron branching complexity via Sholl analysis, calculating particle size distributions, and tracking wound area in scratch assays. It also features a medical image segmentation library that implements U-Net architectures for isolating anatomical s

SDWebImage is an asynchronous image loading library for iOS that provides a framework for fetching, decoding, and caching images. It consists of a core loading library, a decoding engine, a processing pipeline, and a caching system designed to reduce network traffic and improve load times. The project features a two-tier caching architecture that stores assets in both volatile memory and persistent disk storage. It distinguishes itself through a modular loader pattern and a plugin-based decoding system, which allow for the integration of custom storage engines and the support of non-standard

MVVMHabit is an Android development framework and base library that implements the MVVM architecture using Android Architecture Components. It provides a pre-integrated foundation designed to decouple business logic from user interface rendering and lifecycle management. The project distinguishes itself by bundling a comprehensive set of architectural templates, including a reactive event bus for decoupled component communication, token-based data exchange between logic instances, and a single-activity fragment hosting system to reduce manifest overhead. The framework covers broad capability

MWPhotoBrowser is an iOS photo gallery component and media selection tool. It provides a grid-based browser for displaying photos and videos sourced from local storage, system libraries, or web URLs. The component includes a metadata captioning overlay that maps external text properties to descriptive captions displayed over media. To optimize the browsing experience, it utilizes a disk-based remote media cache that saves web images and videos locally to reduce network requests. The system supports a media selection workflow allowing users to pick multiple items using checkboxes and state-ba

Android-Image-Cropper is an image cropping library for Android applications designed to trim and resize photos sourced from cameras or galleries. It functions as a bitmap manipulation tool capable of rotating, flipping, and scaling images to achieve specific dimensions. The library features an aspect ratio constrained cropper that limits the cropping window to fixed shapes or ratios to ensure consistent image output. It handles orientation adjustments by reading embedded metadata to automatically rotate or flip images during the cropping process. The toolkit covers a broad range of image pro

AndroidCommon is a comprehensive utility library designed to provide reusable infrastructure and architectural patterns for Android application development. It organizes common helper functions into stateless modules, offering consistent access to system resources, data parsing logic, and core infrastructure abstractions. The framework distinguishes itself by providing specialized components for managing background tasks and complex user interface interactions. It includes utilities for coordinating background file transfers through the system download manager and executing shell commands to

The inspector is a diagnostic and validation tool for the Model Context Protocol. It provides an interactive interface and a transport proxy to discover, inspect, and execute the tools, prompts, and resources provided by an MCP server. The project serves as a debugger and compliance tester to verify that server implementations adhere to the protocol specification and JSON-RPC standards. It allows for real-time monitoring of message exchanges and logs between clients and servers across various transport layers, such as standard input/output and Server-Sent Events. The tool covers a broad rang

OkHttp is an HTTP client for the JVM and Android that enables network communication via synchronous and asynchronous requests. It provides a core identity as a comprehensive networking toolkit featuring a WebSocket client for bidirectional data synchronization, a TLS security toolkit for encrypted communication, and a programmable HTTP mock server for simulating backend responses. The project distinguishes itself through a specialized security and performance architecture. It implements mutual TLS, certificate pinning, and DNS over HTTPS to secure data in transit, while utilizing connection p

RxJava is a reactive stream processing framework and JVM reactive extensions library. It serves as an asynchronous dataflow orchestrator used to compose event-based programs by transforming, combining, and consuming real-time data flows on the Java Virtual Machine. The project distinguishes itself through integrated backpressure flow control, which manages the emission rate between producers and consumers to prevent memory exhaustion. It further provides mechanisms for concurrent thread management and parallel data processing to offload blocking operations and maintain application responsiven

EventBus is a publish-subscribe messaging library designed to facilitate decoupled communication between components in Java applications. It functions as a central hub where producers dispatch events that are routed to subscribers based on the class type of the payload. By using annotation-based markers, the system maps event handlers to specific data types, allowing different parts of an application to exchange information without requiring direct references between classes. The library distinguishes itself through a focus on performance and execution control. It utilizes a compile-time inde