Libraries for Android

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  • 1
    Arrow

    Arrow

    Functional companion to Kotlin's Standard Library

    Arrow Core includes types such as Either, Validated and many extensions to Iterable that can be used when implementing error handling patterns. Core also includes the base continuation effects system, which includes patterns to remove callbacks and enables controlled effects in direct syntax. Some applications of the effect system reduce boilerplate and enable direct syntax including monad comprehensions and computation expressions. Arrow Fx is a next-generation Typed FP Effects Library that makes tracked effectful programming first class in Kotlin built on top of Kotlin’s suspend system and KotlinX Coroutines Arrow Fx is a functional companion to KotlinX Coroutines augmenting its api with well known functional operators making it easier to compose async and concurrent programs. The library brings purity, referential transparency, and direct imperative syntax to typed FP in Kotlin, and is a fun and easy tool for creating Typed Pure Functional Programs.
    Downloads: 2 This Week
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  • 2
    ButterKnife

    ButterKnife

    Bind Android views and callbacks to fields and methods

    ButterKnife is an annotation-based view binding library for Android that reduces boilerplate in Activities, Fragments, and custom views. Developers replace repetitive findViewById calls with BindView fields and define UI event handlers using annotations like @OnClick, with the library generating efficient binding code at compile time. Because it relies on annotation processing, there’s no reflection at runtime, keeping startup paths lean and predictable. The generated bind/unbind lifecycle helps avoid memory leaks by clearing references when views are destroyed. Butter Knife made UI code more readable and maintainable for years, especially in large codebases with complex layouts and many event hooks. While newer Android APIs now offer official view binding alternatives, the project remains a landmark example of how code generation can simplify everyday Android development.
    Downloads: 2 This Week
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  • 3
    Croppy

    Croppy

    Image Cropping Library for Android

    Image cropping library for Android.
    Downloads: 2 This Week
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  • 4
    DXcharts Lite

    DXcharts Lite

    Flexible open source financial charting library

    Why choose DXcharts Lite? - User-friendly interface. DXcharts Lite provides a seamless intuitive user experience with automatic scale zoom, mouse wheel zoom, and chart scrolling. - Versatile chart types. The Lite version supports eight chart types. The platform streams real-time data updates allowing users to stay on top of market movements. - Comprehensive market coverage. DXcharts Lite provides a wide-ranging selection of asset classes and extensive market coverage. This includes a variety of financial instruments such as stocks, forex, cryptocurrencies, and more. - Efficiency and speed. The platform uses HTML5 based on canvas to ensure smooth chart loading and data processing. - Snapshots. The snapshot feature is a handy tool that allows users to take and share chart snapshots anywhere. - Customisation. The platform offers users the ability to personalise their workspace allowing traders to customise their own theme or choose between the predefined dark or white ones.
    Downloads: 2 This Week
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  • 5
    Day.js

    Day.js

    Fast, immutable 2kB alternative to Moment.js with the same modern API

    Day.js is a fast, immutable, minimalist JavaScript library for parsing, validating, manipulating, and displaying dates and times for modern browsers. Its API is largely compatible with that of Moment.js, so if you know how to use Moment.js you’ll know how to use Day.js. Why opt for Day.js? Because it’s at just 2kB it involves less JavaScript to download, parse and execute, and more time for your code. Day.js is also immutable, chainable and has great support for internationalization. It currently supports all browsers.
    Downloads: 2 This Week
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  • 6
    GSL

    GSL

    Guidelines support library

    The Guidelines Support Library (GSL) contains functions and types that are suggested for use by the C++ Core Guidelines maintained by the Standard C++ Foundation. This repo contains Microsoft's implementation of GSL. The entire implementation is provided inline in the headers under the gsl directory. The implementation generally assumes a platform that implements C++14 support. While some types have been broken out into their own headers (e.g. gsl/span), it is simplest to just include gsl/gsl and gain access to the entire library. This project makes use of the Google Test testing library. Please see the ThirdPartyNotices.txt file for details regarding the licensing of Google Test.
    Downloads: 2 This Week
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  • 7
    KMP NativeCoroutines

    KMP NativeCoroutines

    Library to use Kotlin Coroutines from Swift code in KMP apps

    A library to use Kotlin Coroutines from Swift code in KMP apps. Both KMP and Kotlin Coroutines are amazing, but together they have some limitations. The most important limitation is cancellation support. Kotlin suspend functions are exposed to Swift as functions with a completion handler. This allows you to easily use them from your Swift code, but it doesn't support cancellation. Besides cancellation support, ObjC doesn't support generics on protocols. The library consists of a Kotlin and Swift part which you'll need to add to your project.
    Downloads: 2 This Week
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  • 8
    Kotlin Wrappers

    Kotlin Wrappers

    Kotlin wrappers for popular JavaScript libraries

    This repository hosts a number of Kotlin wrappers for popular JavaScript libraries. To learn more please refer to the READMEs of individual modules. Artifacts are published to Maven Central, see the corresponding README files for package coordinates. All packages require JDK 8 to be installed.
    Downloads: 2 This Week
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  • 9
    LeakCanary

    LeakCanary

    A memory leak detection library for Android

    LeakCanary is a reliable memory leak detection library for Android. It effectively detects leaks and narrows down the cause of each leak through its in-depth knowledge of the internals of the Android Framework. This helps developers avoid and dramatically reduce OutOfMemoryError (OOM) crashes. A memory leak is a programming error that can cause an OutOfMemoryError crash. It’s often caused by bugs related to the lifecycle of objects, and can occur fairly often in Android applications. LeakCanary helps to find and fix those leaks during development so you never have to experience another OOM crash.
    Downloads: 2 This Week
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  • 10
    Lullaby

    Lullaby

    A collection of C++ libraries designed to help teams

    Lullaby is a modular collection of high-performance C++ libraries developed by Google for creating immersive virtual and augmented reality (VR/AR) experiences. It provides a flexible framework built around an Entity-Component-System (ECS) architecture, enabling developers to design efficient, scalable, and data-driven 3D applications. The framework includes tools and APIs for rendering full 3D environments, managing spatial audio, handling animations, and constructing interactive UI elements optimized for VR interfaces. Lullaby’s design promotes rapid iteration and cross-platform deployment, offering support for Android, iOS, Linux, and Windows. It integrates seamlessly with existing Android applications through a Java-based API and supports popular VR platforms such as Google Cardboard and Daydream. Originally used across multiple Google VR products, Lullaby serves as a foundation for building interactive worlds, responsive UIs, and dynamic simulations within immersive environments.
    Downloads: 2 This Week
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  • 11
    Okio

    Okio

    A modern I/O library for Android, Java, and Kotlin Multiplatform

    Okio is a low-level I/O library created by Square for Java and Kotlin that simplifies and optimizes data access. It provides a modern alternative to Java’s InputStream and OutputStream, enabling efficient, buffered, and chainable data handling. Okio is used in many high-performance networking and serialization libraries, including OkHttp.
    Downloads: 2 This Week
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  • 12
    RoundCornerProgressBar

    RoundCornerProgressBar

    [Android] Round Corner Progress Bar Library for Android

    Round corner is cool. Let's make your progress bar with round corner. Colorful rounded corner progress bar.
    Downloads: 2 This Week
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  • 13
    Store5

    Store5

    A Kotlin Multiplatform library for building network-resilient apps

    Modern software needs data representations to be fluid and always available. Users expect their UI experience to never be compromised (blocked) by new data loads. Whether an application is social, news or business-to-business, users expect a seamless experience both online and offline. International users expect minimal data downloads as many megabytes of downloaded data can quickly result in astronomical phone bills. Store is a typed repository that returns a flow of Data /Loading /Error from local and network data sources.
    Downloads: 2 This Week
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  • 14
    WhatIf

    WhatIf

    Fluent syntactic sugar of Kotlin for handling single if-else statement

    Fluent Kotlin expressions for handling single if-else statements, nullable, collections, and boolean. WhatIf has been downloaded in more than 110k Kotlin and Android projects all over the world.
    Downloads: 2 This Week
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  • 15
    billboard.js

    billboard.js

    Re-usable, easy interface JavaScript chart library based on D3.js

    billboard.js is a re-usable, easy interface JavaScript chart library, based on D3.js. The name "billboard" comes from the famous "billboard chart" which everybody knows. billboard.js provides the easiest way to create a 'chart' instantly. Chart generation is super easy. With extensive options, you can create a chart instantly! Yes, billboard.js works on D3 v4+; what everybody was waiting for! All of the code was written as an ESM(ES Module) with ES6+ syntax. Combine hundreds of options to satisfy your needs. Checkout the examples to see in action! Play with the diverse options generated on the fly! If you want to use 'billboard.js' without installation, load files directly from one of the CDN providers.
    Downloads: 2 This Week
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  • 16
    funKTionale

    funKTionale

    Functional constructs for Kotlin

    Functional constructs and patterns for Kotlin. Development of this project is frozen, as it will eventually be made obsolete by Arrow, which merges the functionality of funKTionale and Kategory. If you are not yet using funKTionale, we recommend you start with Arrow instead.
    Downloads: 2 This Week
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  • 17
    Simd

    Simd

    High performance image processing library in C++

    The Simd Library is a free open source image processing library, designed for C and C++ programmers. It provides many useful high performance algorithms for image processing such as: pixel format conversion, image scaling and filtration, extraction of statistic information from images, motion detection, object detection (HAAR and LBP classifier cascades) and classification, neural network. The algorithms are optimized with using of different SIMD CPU extensions. In particular the library supports following CPU extensions: SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX-512 for x86/x64, VMX(Altivec) and VSX(Power7) for PowerPC, NEON for ARM. The Simd Library has C API and also contains useful C++ classes and functions to facilitate access to C API. The library supports dynamic and static linking, 32-bit and 64-bit Windows, Android and Linux, MSVS, G++ and Clang compilers, MSVS project and CMake build systems.
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    Downloads: 14 This Week
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  • 18
    AAA

    AAA

    Curated list of the best FOSS Android apps to maximize your freedom

    This is a list of the best FOSS apps according to us. You can prove us wrong on the contributing page.
    Downloads: 1 This Week
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  • 19
    Android Debug Database

    Android Debug Database

    A library for debugging android databases and shared preferences

    Android Debug Database allows you to view databases and shared preferences directly in your browser in a very simple way. Android Debug Database is a powerful library for debugging databases and shared preferences in Android applications. Delete database rows and shared preferences. Search in your data. Sort data. Download database. Debug Room inMemory database. As this library is auto-initialize, if you want to get the address log, add the following method and call (we have to do like this to avoid build error in release build as this library will not be included in the release build) using reflection. Using the Android Debug Database with an encrypted database. See all the data in the shared preferences used in your application. Run any sql query on the given database to update and delete your data.
    Downloads: 1 This Week
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  • 20
    Android-Bootstrap

    Android-Bootstrap

    Bootstrap style widgets for Android, with Glyph Icons

    Android Bootstrap is an Android library which provides custom views styled according to the Twitter Bootstrap Specification. This allows you to spend more time on development rather than trying to get a consistent theme across your app, especially if you are already familiar with the Bootstrap Framework. Create buttons that support Glyph icons, and are themeable using Bootstrap Brands. BootstrapButtonGroup Allows BootstrapButtons to be grouped together and their attributes controlled en masse. BootstrapProgressBar Displays progress in a bar from 0-100, and animates updates to the current progress. BootstrapLabel Displays non-clickable text in a widget similar to the BootstrapButton, sizable using H1-H6 elements. BootstrapCircleThumbnail Displays images in a center-cropped Circular View, themed with BootstrapBrand.
    Downloads: 1 This Week
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  • 21
    AngularFire

    AngularFire

    The official Angular library for Firebase

    AngularFire smooths over the rough edges an Angular developer might encounter when implementing the framework-agnostic Firebase JS SDK & aims to provide a more natural developer experience by conforming to Angular conventions. Provide and Inject Firebase services in your components. Stable zones allow proper functionality of service workers, forms, SSR, and pre-rendering. Utilize RxJS rather than callbacks for realtime streams. Integrate with NgRx using AngularFire's action based APIs. AngularFire dynamically imports much of Firebase, reducing time to load your app. Get your Angular application deployed on Firebase Hosting with a single command. Zero-effort Angular Router awareness in Google Analytics. Guard your Angular routes with built-in Firebase Authentication checks.
    Downloads: 1 This Week
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  • 22
    Beagle

    Beagle

    Customizable debug menu library for Android apps

    A smart, reliable, and highly customizable debug menu library for Android apps that supports screen recording, network activity logging, and many other useful features.
    Downloads: 1 This Week
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  • 23
    Decompose

    Decompose

    Kotlin Multiplatform lifecycle-aware business logic components

    Decompose is a Kotlin Multiplatform library for breaking down your code into tree-structured lifecycle-aware business logic components (aka BLoC), with routing functionality and pluggable UI (Jetpack/Multiplatform Compose, Android Views, SwiftUI, Kotlin/React, etc.).
    Downloads: 1 This Week
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  • 24
    Dexie.js

    Dexie.js

    A Minimalistic Wrapper for IndexedDB

    Dexie was written to be straightforward and easy to learn. If you've ever had to work with native IndexedDB then you'll certainly appreciate Dexie's concise API. What good is any development tool without great documentation? Dexie is thoroughly explained, and examples are available to help you on your way. Dexie has near-native performance. Its bulk operations utilize an often-overlooked feature in IndexedDB, ignoring success callbacks when possible. Offline databases are groovy! But without keeping the database in sync with a server, you're missing a great deal. Dexie.js solves these limitations and provides a neat database API. Dexie.js aims to be the first-hand choice of a IDB Wrapper Library due to its well thought-through API design, robust error handling, extendability, change tracking awareness and its extended KeyRange support (case insensitive search, set matches and or operations).
    Downloads: 1 This Week
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  • 25
    GUI-lite

    GUI-lite

    The smallest header-only GUI library(4 KLOC) for all platforms

    The smallest header-only GUI library (4 KLOC) for all platforms. Cloud + IoT Solution: master your IoT business all over the world. Multi-language supports UTF-8; Playback Video. Toolkit for building font/image resources. Code Telemetry and Analysis in real-time (remove .sh/.bat files if dislike sharing). Even a C beginner could master GUI-lite quickly. The source code only uses basic C++ features (class, virtual function). We chose C++ as it could make the code size significantly smaller and easier to read. Work smoothly with 3rd party frameworks(Qt/MFC/Winform/Cocoa/Web). Zero dependency, 100% build pass & runnable. Click the demo you like, and run it on your hardware.
    Downloads: 1 This Week
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