Open Source Android Apps - Page 42
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1
BNB Chain
A Binance Smart Chain client based on the go-ethereum fork
The goal of Binance Smart Chain is to bring programmability and interoperability to Binance Chain. In order to embrace the existing popular community and advanced technology, it will bring huge benefits by staying compatible with all the existing smart contracts on Ethereum and Ethereum tooling. And to achieve that, the easiest solution is to develop based on the go-Ethereum fork, as we respect the great work of Ethereum very much. Binance Smart Chain starts its development based on go-ethereum fork. So you may see many toolings, binaries and also docs are based on Ethereum ones, such as the name “geth”. But from that baseline of EVM compatible, Binance Smart Chain introduces a system of 21 validators with Proof of Staked Authority (PoSA) consensus that can support short block time and lower fees. The most bonded validator candidates of staking will become validators and produce blocks. -
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BoringSSL
Mirror of BoringSSL
BoringSSL is a Google-maintained fork of OpenSSL, designed specifically to meet the security, performance, and maintainability needs of Google’s infrastructure and products. While fully open source, BoringSSL is not intended for general public use — it serves as a streamlined, heavily modified SSL/TLS and cryptography library optimized for Google’s internal ecosystem, including Chrome/Chromium, Android, and other Google services. The project prioritizes security, simplicity, and maintainability over backward compatibility. Unlike OpenSSL, BoringSSL provides no guarantee of stable APIs or ABIs, meaning third-party projects depending on it may frequently break. Google products that use BoringSSL ship their own copies and update them as needed, enabling faster iteration without legacy constraints. BoringSSL includes comprehensive API documentation, build instructions, and guidance for porting code from OpenSSL. -
3
BottomSheetPickers
Third-party date and time pickers for Android
BottomSheetPickers is an Android UI library that provides alternative date and time picker components designed to replace the default system pickers with a more modern bottom sheet interface. It supports Android API level 14 and above, making it compatible with a wide range of devices, including older versions of Android. The library includes multiple picker styles such as number pad time pickers and grid-based pickers, offering different interaction models depending on the use case. These pickers are implemented as dialog fragments, allowing them to integrate smoothly into existing Android applications while maintaining lifecycle awareness. The library is built on top of Android support libraries and can be customized through various configuration options such as themes, callbacks, and builder patterns. Developers can easily handle user input through listener interfaces, enabling flexible integration with application logic. -
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CURRENT-DEVICE
The easiest way to write conditional CSS and/or JavaScript
This module makes it easy to write conditional CSS and/or JavaScript based on device operating system (iOS, Android, Blackberry, Windows, macOS, Firefox OS, MeeGo, AppleTV, etc), orientation (Portrait vs. Landscape), and type (Tablet vs. Mobile). A lightweight JavaScript library to detect device type and screen size, optimizing responsive design. -
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5
ChatGPT Telegram Bot
A Telegram bot that integrates with OpenAI's official ChatGPT APIs
A Telegram bot that integrates with OpenAI's official ChatGPT, DALL·E and Whisper APIs to provide answers. Ready to use with minimal configuration required. -
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Chip Navigation Bar
An Android navigation bar widget
A navigation bar widget inspired on Google Bottom Navigation mixed with chip components. ChipNavigationBar supports a vertical orientation mode. This is very useful for tablets or devices with large screens. -
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CryptoSwift
Collection of standard and secure cryptographic algorithms
The master branch follows the latest currently released version of Swift. If you need an earlier version for an older version of Swift, you can specify its version in your Podfile or use the code on the branch for that version. Older branches are unsupported. Swift Package Manager uses debug configuration for debug Xcode build, that may result in significant (up to x10000) worse performance. Performance characteristic is different in Release build. XCFrameworks require Xcode 11 or later and they can be integrated similarly to how we’re used to integrating the .framework format. Embedded frameworks require a minimum deployment target of iOS 9 or macOS Sierra (10.12). CryptoSwift uses array of bytes aka Array<UInt8> as a base type for all operations. Every data may be converted to a stream of bytes. You will find convenience functions that accept String or Data, and it will be internally converted to the array of bytes. -
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DKVideoPlayer
Android Video Player. Android video player, encapsulates MediaPlayer
DKVideoPlayer is a feature-rich Android video playback framework that abstracts multiple playback engines such as MediaPlayer, ExoPlayer, and IjkPlayer into a unified interface. It is designed to provide a flexible and customizable video playback experience, supporting modern app requirements like list playback, preloading, and floating windows similar to short-video platforms. The library includes advanced playback features such as gesture controls for brightness, volume, and seeking, as well as support for subtitles, danmaku overlays, and video filters. It also offers seamless playback transitions, caching during playback, and picture-in-picture functionality for enhanced user experience. Developers can easily switch between different playback cores depending on performance needs, while maintaining a consistent API. With extensive UI components and modular design, DKVideoPlayer is suitable for building both simple media apps and complex streaming interfaces. -
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DisneyCompose
A demo Disney app using Jetpack Compose and Hilt based on Android
A demo Disney app using compose and Hilt based on modern Android tech-stacks and MVVM architecture. Fetching data from the network and integrating persisted data in the database via repository pattern. -
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10
Droid Plugin
A plugin framework on android,Run any third-party apk
A plugin framework on android, Run any third-party apk without installation, modification, or repackage. This is a framework on android. You can run any third-party apk without installation, modification or repackage with Droid Plugin. Given its .apk file, the plugged app could be run either independently or as a plugin of the host, NO source code is needed. The plugged app are recognized as Installed by the host and other plugged apps. Very low level of code invasion, indeed just one line code to integrate DroidPlugin into the host app. Complete code level separation between host and plugged apps, only system-level message passing method provided by Android allowed. Resources management are also completely separated between host and plugged apps. Process management for plugged apps, idle processed of the plugged app will be timely recycled to guarantee minimum memory usage. -
11
Ebitengine
A dead simple 2D game engine for Go
Ebitengine (formerly known as Ebiten) is a lightweight, open-source 2D game engine built for the Go programming language. It is designed to be simple and easy to use, allowing developers to build games quickly with a clean and minimal API. Ebitengine supports cross-platform deployment, including desktop, mobile, web, and select console platforms. The engine provides essential features such as 2D graphics rendering, input handling, and audio playback. Developers can work with transformations, shaders, and offscreen rendering to create polished visuals. Built-in support for keyboards, mice, gamepads, and touch input ensures flexible control schemes. Overall, Ebitengine focuses on productivity and portability while maintaining strong performance. -
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Emerge
Browser-based interactive codebase and dependency visualization tool
Emerge (or emerge-viz) is an interactive code analysis tool to gather insights about source code structure, metrics, dependencies, and complexity of software projects. You can scan the source code of a project, calculate metric results and statistics, generate an interactive web app with graph structures (e.g. a dependency graph or a filesystem graph), and export the results in some file formats. Emerge currently has parsing support for the following languages: C, C++, Groovy, Java, JavaScript, TypeScript, Kotlin, ObjC, Ruby, Swift, Python, and Go. The structure, coloring, and clustering is calculated and based on the idea of combining a force-directed graph simulation and Louvain modularity. emerge is mainly written in Python 3 and is tested on macOS, Linux, and modern web browsers (i.e., the latest Safari, Chrome, Firefox, and Edge). -
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ExpandableLayout
An expandable layout that shows a two-level layout with an indicator
An expandable layout that shows a two-level layout with an indicator. -
14
File-sharing-Bot
Telegram Bot to store Posts and Documents
Telegram Bot to store posts and documents and it can be accessed by special links. -
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Firebase Kotlin SDK
A Kotlin-first SDK for Firebase
The Firebase Kotlin SDK is a Kotlin-first SDK for Firebase. Its API is similar to the Firebase Android SDK Kotlin Extensions but also supports multiplatform projects, enabling you to use Firebase directly from your common source targeting iOS, Android, Desktop, or Web, enabling the use of Firebase as a backend for Compose Multiplatform, for example. Unlike the Kotlin Extensions for the Firebase Android SDK this project does not extend a Java-based SDK so we get the full power of Kotlin including coroutines and serialization. Asynchronous operations that return a single or no value are represented by suspending functions in the SDK instead of callbacks, listeners or OS specific types such as Task. -
16
FirebaseUI for Android
Optimized UI components for Firebase
FirebaseUI is an open-source library for Android that allows you to quickly connect common UI elements to Firebase APIs. A compatible FirebaseUI client is also available for iOS. FirebaseUI has separate modules for using Firebase Realtime Database, Cloud Firestore, Firebase Auth, and Cloud Storage. To get started, see the individual instructions for each module. FirebaseUI is published as a collection of libraries separated by the Firebase API they target. Each FirebaseUI library has a transitive dependency on the appropriate Firebase SDK so there is no need to include those separately in your app. After the project is synchronized, we're ready to start using Firebase functionality in our app. There is a sample app in the app/ directory that demonstrates most of the features of FirebaseUI. -
17
GitJournal
Mobile first Note Taking integrated with Git
GitJournal is a note taking app focused on privacy and data portability. It stores all its notes in a standardized Markdown + YAML header format (optional). The notes are stored in a Git Repo of your choice - GitHub / Gitlab / Custom-provider. This means you can easily self host or host your notes in one of the many Git providers. GitJournal uses standard SSH, and can therefore work with any Git Hosting Provider. GitJournal aims to be extremely configurable and work with your favorite apps. The idea is to not build another silo and instead integrate it into your existing workflow. No two people are the same. Depending on the task and the person, your Notes may need to be visualized differently. All your notes are stored in Markdown. However you can edit the notes in many different ways depending on the task. Soon you'll even be able to visualize yours Notes in a Graph. GitJournal will always be completely Open Source. -
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Golang Telegram Bot
Telegram Bot API Go framework
Telegram Bot API Go framework. -
19
Gradle Play Publisher
GPP is Android's unofficial release automation Gradle Plugin
Gradle Play Publisher (GPP) is Android's unofficial release automation Gradle Plugin. It can do anything from building, uploading, and then promoting your App Bundle or APK to publishing app listings and other metadata. The first APK or App Bundle needs to be uploaded via the Google Play Console because registering the app with the Play Store cannot be done using the Play Developer API. For all subsequent uploads and changes, GPP may be used. To successfully upload apps to the Play Store, they must be signed with your developer key. Make sure you have a valid signing configuration. After you've gone through the Service Account setup, you should have a JSON file with your private key. GPP supports uploading both the App Bundle and APK. Once uploaded, GPP also supports promoting those artifacts to different tracks. -
20
Grafika
Grafika test app
Welcome to Grafika, a dumping ground for Android graphics & media hacks. A collection of hacks exercising graphics features. An SDK app, developed for API 18 (Android 4.3). While some of the code may work with older versions of Android, some sporatic work is done to support them. Open source (Apache 2 license), copyright by Google. So you can use the code according to the terms of the license, A perpetual work-in-progress. It's updated whenever the need arises. To some extent, Grafika can be treated as a companion to the Android System-Level Graphics Architecture document. The doc explains the technology that the examples rely on, and uses some of Grafika's activities as examples. Features are added to Grafika as the need arises, often in response to developer complaints about correctness or performance problems in the platform. -
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Ionic Framework
A powerful cross-platform UI toolkit for building native-quality apps
A powerful cross-platform UI toolkit for building native-quality iOS, Android, and Progressive Web Apps with HTML, CSS, and JavaScript. With a low friction migration, Ionic 6 brings improved desktop support, new UI components, iOS/Android design enhancements, performance and bundling improvements, and so much more. Free and open-source, Ionic offers a library of mobile-optimized UI components, gestures, and tools for building fast highly interactive apps. Ionic’s UI components look great on all mobile devices and platforms. Start with pre-made components, typography, and a base theme that adapts to each platform. Ionic lets developers to ship apps to the app stores and as a PWA with a single code base. With Adaptive Styling, apps look and feel at home on every platform. Create, build, test, and deploy your app with the Ionic CLI. Take advantage of Live Reload, deployments, integrations, and even use your favorite JS framework’s CLI. -
22
J2ObjC
A Java to iOS Objective-C translation tool and runtime
J2ObjC is an open-source command-line tool from Google that translates Java source code to Objective-C for the iOS (iPhone/iPad) platform. This tool enables Java source to be part of an iOS application's build, as no editing of the generated files is necessary. The goal is to write an app's non-UI code (such as application logic and data models) in Java, which is then shared by web apps (using GWT), Android apps, and iOS apps. J2ObjC supports most Java language and runtime features required by client-side application developers, including exceptions, inner and anonymous classes, generic types, threads and reflection. JUnit test translation and execution is also supported. J2ObjC cannot convert Android binary applications. Developers must have source code for their Android app, which they either own or are licensed to use. -
23
JetQuotes
Quotes Application built to Demonstrate use of Jetpack Compose
A Quotes Application built to Demonstrate use of Jetpack Compose with Modern Android Architecture Components & MVVM Architecture. -
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Jitsi Meet
Secure, simple and scalable video conferences application
Go ahead, video chat with the whole team. In fact, invite everyone you know. Jitsi Meet is a fully encrypted, 100% open source video conferencing solution that you can use all day, every day, for free — with no account needed. Head over to meet.jit.si and see the service in action before you decide whether you’d like to run your own instance. For those interested, check out the meet.jit.si terms of service and privacy policy. Yep, it’s free — and it’s technologically advanced, too. In fact, Jitsi Meet sounds better, thanks to HD audio with Opus; is anonymous, no need for an account, ever! It also keeps conversations private with encryption by default (and advanced security settings) and is developer-friendly, modify and customize it to your heart’s content. It’s 100% open source. Trade messages and emojis while you video conference, with integrated chat. -
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KMM ViewModel
Library to share Kotlin ViewModels with SwiftUI
A library that allows you to share ViewModels between Android and iOS. The latest version of the library uses Kotlin version 1.9.22. Compatibility versions for older and/or preview Kotlin versions are also available. When subclassing your Kotlin ViewModel in Swift you might experience some issues in the way those ViewModels are cleared. Since currentTimeFlow is a StateFlow we don't ever expect it to fail, which is why we are using the assertNoFailure. However, in this case you'll notice that the publisher will fail with a JobCancellationException. The problem here is that before the TimeTravelViewModel is deinited it will already be cleared. Meaning the viewModelScope is cancelled and onCleared is called. This results in the Combine publisher outliving the underlying StateFlow collection.
