Showing 42 open source projects for "core java"

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  • 1
    Bytecode Viewer

    Bytecode Viewer

    A reverse engineering suite (decompiler, editor, debugger and more)

    Some of Bytecode Viewer features are that it provides Java Decompiling with Six different decompilers (DJ-GUI/Core, Procyon, CFR, Fernflower, Krakatau, and JADX-Core). Bytecode Decompiling with CFIDE. Android APK integrated with Dex2Jar. Securely launch Java applications and insert hooks via EZ-Injection. Scan for malicious code with the Malicious Code Scanner plugin. Export as DEX, Jar, Class, Zip or Java Source File.
    Downloads: 90 This Week
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  • 2
    Proton VPN for Android

    Proton VPN for Android

    ProtonVPN Android app

    The Proton VPN app for Android is intuitive to use, offers lots of useful features, and keeps you secure and private when surfing the internet. Once the app is installed, open it and log in with your Proton VPN username and password. If you are a Proton Mail user, you can access the Proton VPN Free plan by logging in with your Proton Mail username and password. Touch the Quick Connect button to automatically connect to the fastest VPN server for your location. You can also choose to connect...
    Downloads: 698 This Week
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  • 3
    GmsCore

    GmsCore

    Free implementation of Play Services

    microG GmsCore is a FLOSS (Free/Libre Open Source Software) framework to allow applications designed for Google Play Services to run on systems, where Play Services is not available. The linux-based open-source mobile operating system Android is not only the most popular mobile operating system in the world, it’s also on the way to becoming a proprietary operating system. How is that? While the core operating system is still released as part of the Android Open Source Project, the majority...
    Downloads: 286 This Week
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  • 4
    ZXing

    ZXing

    Barcode scanning library for Java, Android

    ZXing or “Zebra Crossing” is an open source multi-format 1D/2D barcode image processing library that’s been implemented in Java, and also comes with ports to other languages. It currently supports the following formats: UPC-A and UPC-E EAN-8 and EAN-13 Code 39 Code 93 Code 128 ITF Codabar RSS-14 (all variants) RSS Expanded (most variants) QR Code Data Matrix Aztec ('beta' quality) PDF 417 ('alpha' quality) MaxiCode ZXing is made up of several modules, including a core image decoding library, JavaSE-specific client code, and Android client Barcode Scanner. ...
    Downloads: 30 This Week
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  • 5
    Unciv

    Unciv

    Open-source Android/Desktop remake of Civ V

    Unciv is an open-source reimplementation of the game Civilization V in Java using LibGDX. It focuses on replicating the core gameplay mechanics in a lightweight, mobile- and desktop-friendly format, supporting both single-player and multiplayer modes. Unciv uses a minimalist art style and text-based UI to deliver a fast, turn-based strategy experience.
    Downloads: 37 This Week
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  • 6
    Joda-Time

    Joda-Time

    Replacement for the Java date and time classes prior to Java SE 8

    The standard date and time classes prior to Java SE 8 are poor. By tackling this problem head-on, Joda-Time became the de facto standard date and time library for Java prior to Java SE 8. Note that from Java SE 8 onwards, users are asked to migrate to java.time (JSR-310) - a core part of the JDK which replaces this project. The design allows for multiple calendar systems, while still providing a simple API.
    Downloads: 3 This Week
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  • 7
    libsignal

    libsignal

    Home to the Signal Protocol and other cryptographic primitives

    libsignal is the foundational cryptographic library that implements the Signal Protocol and other essential primitives used across the official Signal clients and servers, enabling secure end-to-end encrypted communication. Written primarily in Rust with bindings and APIs surfaced for Java, Swift, and TypeScript, this library encapsulates critical algorithms like the Double Ratchet, prekey mechanisms, secure key storage, and zero-knowledge group primitives, along with additional utilities for media handling and device key transfer. libsignal abstracts complex cryptographic constructions into reusable components that client applications can adopt to ensure forward secrecy, authentication, and integrity without re-implementing core security logic. ...
    Downloads: 1 This Week
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  • 8
    capacitor

    capacitor

    Build cross-platform native progressive web apps for iOS and Android

    Capacitor is an open source native runtime for building Web Native apps. Create cross-platform iOS, Android, and Progressive Web Apps with JavaScript, HTML, and CSS. Capacitor’s native plugin APIs make it extremely easy to access and invoke common device functionality across multiple platforms. Build web-based applications that run equally well across iOS, Android, and as Progressive Web Apps. Access the full Native SDKs on each platform, and easily deploy to the App Stores (and the web)....
    Downloads: 43 This Week
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  • 9

    Material Components for Android

    Modular and customizable Material Design UI components for Android

    Material Components for Android delivers Material Design’s popular and reliable design and development resources to Android developers. With Material Design’s modular and customizable UI components, Android developers can create beautiful, high quality products faster and easier. Developed by a core team of engineers and UX designers at Google, Material Components enable developers to achieve a more reliable development workflow for building exceptional and highly functional apps....
    Downloads: 6 This Week
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  • 10
    newpipeextractor

    newpipeextractor

    Library for extracting streaming site data without official APIs

    NewPipeExtractor is an open source Java library designed to extract data from streaming platforms by analyzing their web interfaces instead of relying on official APIs. It serves as the core extraction component used by the NewPipe Android application, but it is built as a standalone library that can also be integrated into other software projects. NewPipeExtractor provides a unified framework for retrieving information such as video streams, playlists, channels, and search results from supported streaming services. ...
    Downloads: 4 This Week
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  • 11

    Tinker

    Android hot-fix solution library

    Tinker is a hot-fix solution library for Android, and the official one for WeChat. It supports dex, So library, and resources, allowing application updates without needing reinstallation. Tinker consists mainly of 3 parts: a gradle compile plugin, a core SDK library, and a command-line version of non-gradle compiled users. There are many other hot-fix solutions just like Tinker, but Tinker overcomes many of the problems that other solutions have. For starters, Tinker offers class, So and...
    Downloads: 1 This Week
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  • 12
    RIBs

    RIBs

    Uber's cross-platform mobile architecture framework

    RIBs is the cross-platform architecture framework behind many mobile apps at Uber. The name RIBs is short for Router, Interactor and Builder, which are core components of this architecture. This framework is designed for mobile apps with a large number of engineers and nested states. Shared architecture across iOS and Android. Build cross-platform apps that have similar architecture, enabling iOS and Android teams to cross-review business logic code. Testability and Isolation. Classes must...
    Downloads: 1 This Week
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  • 13
    Godot Kotlin JVM

    Godot Kotlin JVM

    Godot Kotlin JVM Module

    This is a Kotlin language binding for the Godot game engine. It is built as a module (like the C# binding) to interact with Godot's core internally. The binding provides you Godot APIs as Kotlin classes, so you can write your game logic completely in Kotlin. Your code will be compiled into a .jar which is then executed by an embedded JVM, so you don't have to worry that your users have Java installed. It's already embedded in your game executable. You also don't have to worry about any binding logic. ...
    Downloads: 1 This Week
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  • 14
    Android Interview Questions

    Android Interview Questions

    Your Cheat Sheet For Android Interview

    This repository is a comprehensive study guide for Android interviews, organized to cover the platform from fundamentals to advanced topics. It includes explanations and Q&A on the Android app lifecycle, activities and fragments, services, broadcast receivers, content providers, and the build system. Modern practices are addressed as well—Kotlin language features, coroutines, Jetpack components, MVVM/MVI architecture, dependency injection, and testing strategies. Performance and reliability...
    Downloads: 0 This Week
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  • 15
    Pixeval

    Pixeval

    Wow. Yet another Pixiv client!

    Pixeval is a third-party proxy-free P station client developed by me as an amateur. The UI is implemented using Windows Presentation Foundation , based on .NET Core 3.0 , and supports Windows 7-10 (planning to cancel support other than Win10), and implements most of the The browsing function and many enhancements have been made. It has been open sourced on Github based on the AGPL protocol . The project was conceived in 2018. At that time, the api of the P station was written in Java. At that time, it could also be accessed by modifying the hosts method. ...
    Downloads: 1 This Week
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  • 16
    Android Upload Service

    Android Upload Service

    Easily upload files in the background with progress notification

    Easily upload files (Multipart/Binary/FTP out of the box) in the background with progress notification. Support for persistent upload requests, customizations and custom plugins. At the core of the library, there is a Service that handles multiple concurrent upload tasks in the background. It publishes broadcast intents to notify status. This way the logic is completely decoupled from the UI. You are safe launching upload requests from your fragments, activities and services without worrying...
    Downloads: 0 This Week
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  • 17
    Arrow OS

    Arrow OS

    It is an AOSP based project with an aim of keeping things clean!

    ArrowOS is an AOSP based open source project started with the aim of keeping things simple, clean and neat, both for the Android system and users. We understand the pain of unnecessary and sometimes rarely used mods/features being shipped with custom roms nowadays which may end up causing battery drains and/or memory leaks. This is being strictly avoided on our side keeping everything to a bare minimum, delivering the stable performance all the time without destroying the AOSP interface....
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    Downloads: 854 This Week
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  • 18

    Prime number ( primenumbers )

    Benchmark for 50 000 000 prime numbers as single and multicore

    Simple source files and compiled JAR Java programs, for benchmark 50 000 000 cycle finding prime numbers. On Intel(R) Core(TM) i5-8600K CPU, Windows 10 20H2, i have 39 second on single core and 7,6 second on multi core. (PS: C++ multicore 6 second). Added C files for gcc compiler in Windows 10 and for Xcode C command line project in MacOS ( tested on Mac mini M2 with single core 16 to 25 sec and multicore 2,3 to 5 second by compiler -O switch). ...
    Downloads: 0 This Week
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  • 19
     UDP Warp+ Free Server tls SNI VPS

    UDP Warp+ Free Server tls SNI VPS

    Value Added Warp over SNI via SNI injection SSL/TLS Tunnel

    How It Works [Android Device] │ │ WireGuard UDP ▼ [SNI Tunnel Client] ← Wraps UDP in TLS/ssl + injects fake SNI │ │ Looks like: HTTPS → microsoft.com ✓ ▼ [ISP Firewall] ← Passes through — sees only valid HTTPS │ ▼ [VPS Server] ← Decrypts TLS, recovers WireGuard UDP │ ▼ [Cloudflare Warp] ← Receives native WireGuard traffic │ ▼ Internet The core trick is SNI injection: the...
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    Downloads: 19 This Week
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  • 20
    UDP OpenVPN Server tls SNI VPS

    UDP OpenVPN Server tls SNI VPS

    Value Added OpenVPN over SNI via SNI injection SSL/TLS Tunnel

    How It Works [Android Device] │ │ OpenVPN TCP/UDP ▼ [SNI Tunnel Client] ← Wraps traffic in SSL + injects fake SNI │ │ Looks like: HTTPS → microsoft.com ✓ ▼ [ISP Firewall] ← Passes through — sees only valid HTTPS │ ▼ [VPS Server] ← Decrypts TLS, recovers OpenVPN traffic │ ▼ [OpenVPN Server] ← Receives native OpenVPN traffic │ ▼ Internet The core trick is SNI injection: the...
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    Downloads: 7 This Week
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  • 21
    ORMLite Android

    ORMLite Android

    ORMLite Android functionality used in conjunction with ormlite-core

    This package provides Android-specific functionality. Users that are connecting to SQL databases via JDBC connections should download the ormlite-jdbc package instead of this Android one. Object Relational Mapping Lite (ORM Lite) provides some simple, lightweight functionality for persisting Java objects to SQL databases while avoiding the complexity and overhead of more standard ORM packages.
    Downloads: 1 This Week
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  • 22
    React Native Push Notifications

    React Native Push Notifications

    React Native local and remote notifications

    React Native Local and Remote Notifications for iOS and Android. firebase-messaging, prior to version 15 requires to have the same version number in order to work correctly at build time and at run time. The Firebase Android library firebase-core is no longer needed. This SDK included the Firebase SDK for Google Analytics. Now, to use Analytics or any Firebase product that recommends the use of Analytics, you need to explicitly add the Analytics dependency. Example folder contains an example...
    Downloads: 0 This Week
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  • 23
    AndroidOfferKiller

    AndroidOfferKiller

    Help you get a better offer

    ...It includes sections about referral channels and hiring information for certain companies, highlighting real-world hiring context in addition to theory. The project positions itself as an all-in-one preparation hub where you can review core CS topics, Android specifics, and optimization best practices before interviews. It is open-source and licensed under Apache-2.0, allowing learners to contribute new questions, solutions, and articles over time.
    Downloads: 0 This Week
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  • 24
    Riot Android

    Riot Android

    A glossy Matrix collaboration client for Android

    Riot Android is the original Android client for the Matrix network — a decentralized, secure communication protocol — that enables users to send end-to-end encrypted messages, join rooms, conduct voice and video calls, and interact across federated communities without relying on centralized servers. As the predecessor to Element X, Riot Android laid the groundwork for mobile access to Matrix while providing advanced features like threaded replies, rich media handling, room moderation, and...
    Downloads: 0 This Week
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  • 25
    MAME4droid

    MAME4droid

    MAME Android Emulator.

    MAME4droid (0.139u1) is developed by David Valdeita (Seleuco), port of MAME 0.139u1 emulator by Nicola Salmoria and TEAM. MAME4droid (0.139u1) emulates arcade games supported by original MAME 0.139u1. This MAME4droid version is targeted to Dual-Core devices, because it is based on a high specs 2010 PC MAME build. Anyway don't expect arcade games of the 90 to work at full speed. With some games that are really bad optimized (like outrun or mk series) you will need at least a 1.5 ghz...
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    Downloads: 174 This Week
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