Java Mobile Apps for Android

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Browse free open source Java Mobile Apps for Android and projects below. Use the toggles on the left to filter open source Java Mobile Apps for Android by OS, license, language, programming language, and project status.

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  • 1
    libsdl-android

    libsdl-android

    SDL library for Android, including several games.

    Port of SDL library to Android mobile platform. There are also several games inside the repository, along with their sources and build files. Both SDL 1.2 and 1.3/2.0 versions are supported (1.3/2.0 support is experimental) Sources are at https://github.com/pelya/commandergenius
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    Downloads: 4,378 This Week
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  • 2
    Open Camera

    Open Camera

    Camera app for Android.

    Open Camera is an Open Source Camera app for Android(TM) phones and tablets. * Get it on Google Play: https://play.google.com/store/apps/details?id=net.sourceforge.opencamera * Get it on F-Droid: https://f-droid.org/en/packages/net.sourceforge.opencamera/ * Or you can download the APK/source directly, see "Files" above. Android, Google Play and the Google Play logo are trademarks of Google LLC.
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    Downloads: 1,080 This Week
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  • 3
    Termux application

    Termux application

    Terminal emulator application for Android OS extendible

    Termux is an Android terminal application and Linux environment. At first start a small base system is downloaded, desired packages can then be installed using the apt package manager known from the Debian and Ubuntu Linux distributions. Access the built-in help by long-pressing anywhere on the terminal and selecting the Help menu option to learn more. Allows the app to view information about network connections such as which networks exist and are connected. Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet. Allows an app to ask for permission to ignore battery optimizations for that app. This app can appear on top of other apps or other parts of the screen. This may interfere with normal app usage and change the way that other apps appear.
    Downloads: 248 This Week
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  • 4
    Apktool

    Apktool

    A tool for reverse engineering Android apk files

    A tool for reverse engineering 3rd party, closed, binary Android apps. It can decode resources to nearly original form and rebuild them after making some modifications. It also makes working with an app easier because of the project like file structure and automation of some repetitive tasks like building apk, etc. It is NOT intended for piracy and other non-legal uses. It could be used for localizing, adding some features or support for custom platforms, analyzing applications and much more. The decode option on Apktool can be invoked either from d or decode. In order to run a rebuilt application. You must resign the application. Android documentation can help with this. As you probably know, Android apps utilize code and resources that are found on the Android OS itself. These are known as framework resources and Apktool relies on these to properly decode and build apks.
    Downloads: 137 This Week
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  • 5
    Amaze File Manager

    Amaze File Manager

    Material design file manager for Android

    Amaze File Manager is an open source Material Design file manager for Android. It makes Material Design's exceptional features easier than ever to access on your Android device. It comes with an easy-to-use navigation drawer for quick navigation plus plenty of awesome features. It allows you to work on multiple tabs at a time; provides quick access to history, bookmarks or any file; has an inbuilt Database Reader, Zip/Rar Reader, Apk Reader, Text Reader and so much more! Amaze File Manager is based on Material Design guidelines and is completely open source, with no ads or in-app purchases whatsoever.
    Downloads: 41 This Week
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  • 6
    Magisk Manager

    Magisk Manager

    Companion Android application for Magisk

    Magisk Manager is the companion Android app historically used to manage the Magisk root solution—installing updates, toggling modules, configuring DenyList/Hide-like behavior, and passing device integrity checks where possible. It centralizes operations that would otherwise require flashing or command-line work, making root management accessible to power users and developers. The app surfaces module repositories, logs, and safety features, giving you insight into what’s modified and how it affects system behavior. Over time, its role evolved alongside Android’s changing security model, but the core idea remains: provide a clean UI for patching, updating, and managing a systemless root environment. It also acts as a troubleshooting hub, exposing diagnostics that help users resolve boot loops or module conflicts. For anyone maintaining a rooted device for legitimate development and customization, Magisk Manager is the operational control center that keeps the stack coherent.
    Downloads: 29 This Week
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  • 7
    VirtualXposed

    VirtualXposed

    Use Xposed without root, unlock the bootloader or modify system image

    Open VirtualXposed, click on the drawer button at the bottom of the home page (or long click the screen), add your desired APP and Xposed Module to VirtualXposed’s virtual environment. Note, all operations (installation of Xposed Module, APP) must be done in VirtualXposed, otherwise the Xposed Module installed won’t take effect. For example, if you install the YouTube app on your system (Your phone’s original system, not in VirtualXposed), and then install YouTube AdAway (A YouTube Xposed Module) in VirtualXposed; or you install YouTube in VirtualXposed, and install YouTube AdAway on the original system, or both of them are installed on the original system, neither of these three cases will work! Clone an installed app from your original system. (Click Button at bottom of the home page, then click Add App, the first page shows a list of installed apps.) Install via an APK file.
    Downloads: 11 This Week
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  • 8
    QKSMS

    QKSMS

    A beautiful SMS messenger for Android

    Fall in love with texting all over again with QKSMS! QKSMS is a beautiful, simple and customizable open source replacement to the stock messaging app on Android. It's got a clean, clutter-free intuitive design that lets you focus on what matters, plus millions of colors to choose from to make the theme of the entire app truly your own. QKSMS has some powerful features, including photo sharing, group chat, conversation blocking, message backup and restore and more. It's got everything you need from a text messaging app, plus all the fun features that make for a great text messaging experience. Simply put, QKSMS makes texting magical again, just the way it should be!
    Downloads: 10 This Week
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  • 9
    The Fresh Project

    The Fresh Project

    Simply Awesome.

    The official home of Fresh, a One UI-based custom firmware for Samsung devices.
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    Downloads: 200 This Week
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  • 10
    OCR Manga Reader for Android

    OCR Manga Reader for Android

    Android Manga reader with Japanese OCR and dictionary capabilities

    OCR Manga Reader is a free and open source Android app that allows you to quickly OCR and lookup Japanese words in real-time. It does not have ads or telemetry/spyware and does not require an Internet connection. Supports both EDICT and EPWING dictionaries. Requires Android 4.0 (Ice Cream Sandwich) or higher. See http://ocrmangareaderforandroid.sourceforge.net/ for details.
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    Downloads: 54 This Week
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  • 11
    K-9 Mail

    K-9 Mail

    Open Source Email App for Android

    K-9 Mail is an advanced, open-source email client for Android that's focused on making it easy to chew through large volumes of email. It's designed to be easy to use by both novice and power users, with plenty of useful features. It has IMAP push email support, support for multiple accounts, support for POP3 and Exchange 2003/2007 (with WebDAV), flagging, filing, signatures and more! K-9 Mail also offers a light and dark theme, keyboard shortcuts and emoji support. Like man's best friend, K-9 Mail is an email client you can depend on, and will surely be your best friend when it comes to handling your emails!
    Downloads: 7 This Week
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  • 12
    SmartCam
    SmartCam - Smart Phone Web Camera - Turns a camera phone (S60, WinMo6.x, Android, Samsung Bada) with bluetooth or WiFi into a handy webcam ready to use with your PC
    Downloads: 29 This Week
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  • 13
    J2ObjC

    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.
    Downloads: 5 This Week
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  • 14
    Quran for Android

    Quran for Android

    A Quran reading application for Android

    Quran for Android is a simple, open source Quran application for Android devices. It is based on Madani and features Madani images, Qaloon images and Naskh images all used with permission. It also has translations, Tafsir and Arabic data from tanzil and King Saud University. This project offers plenty of great features, with many more under development. Current features include translations in many different languages (Arabic Tafseer, English Sahih International Translation, French, German, Indonesian, Malay, Spanish, among others), bookmarking and tagging, audio recitation and more.
    Downloads: 5 This Week
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  • 15
    Facebook SDK for Android

    Facebook SDK for Android

    Used to integrate Android apps with Facebook Platform

    This open-source library allows you to integrate Facebook into your Android app. Integrate your Android app with Facebook to build engaging social apps by using the Facebook SDK for Android. To learn more about using Facebook development tools. The current version of the Facebook SDK for Android is version 11.2.0 and requires the Android API 15. Code and samples for the Facebook SDK for Android are available on GitHub. A secure and convenient way for people to log into your app or website by using their Facebook credentials. Enable people to post to Facebook from your app. People can share, send a message, and share to stories. Understand people's actions in your app and measure the effectiveness of your Mobile App Ads. Get data in and out of Facebook's social graph, query data, post stories, upload photos and perform other tasks.
    Downloads: 4 This Week
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  • 16
    Lynket

    Lynket

    A better browser for Android using the Custom Tab protocol

    Lynket is a unique browser based on the Custom Tabs protocol. Lynket slides over the website on top of your apps, allowing you to move to the website seamlessly. Even if you browse multiple times, you can always press X to quickly return to the app where you left off. Lynket works with any browser that implements the Custom Tab protocol. It also inherits browser behavior such as tracking protection, shared login information, bookmark synchronization, etc.
    Downloads: 4 This Week
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  • 17
    Android 41CV
    A HP41CV simulator for the Android platform. This version is the second beta release and includes nearly all functionality of the HP41CV including running programmes. Programmes can be imported / exported on csv format. A simple programme editor incl
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    Downloads: 18 This Week
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  • 18
    Droid Pentest help you to find all android apps for penetration testing and hacking so you can make complete penetration test platform .
    Downloads: 16 This Week
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  • 19
    ePUBator

    ePUBator

    Minimal offline PDF to ePUB converter for Android

    Minimal offline PDF to ePUB converter for Android - ©2011 Ezio Querini ePUBator extract text from a PDF file and put it in a well formed (epubcheck compliant) ePUB file. PDF extraction based on iText library <http://itextpdf.com/> released under the AGPL license. - ePUBator IS THINKED FOR BOOKS (NOT FOR EVERY TYPE OF PDF), BUT IF YOU NEED A BETTER RESULT TRY SOMETHING ELSE LIKE CALIBRE. - ePUBator doesn't need internet connection (doesn't send your docs somewhere on the net, doesn't have ads). - ePUBator extracts text (no text from pictures or from raster PDF). - ePUBator tries to extract images (only png, jpg and gif) but puts them at the page's end. - ePUBator tries to extract the table of contents if present (or creates a dummy TOC). - ePUBator doesn't extract the font size and style and works fine only with single column PDF (worse with multi column or tables).
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    Downloads: 26 This Week
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  • 20
    Bluetooth GPS for Android

    Bluetooth GPS for Android

    An application for using an external bluetooth GPS on Android devices

    An application for using an external bluetooth GPS on Android devices. The application connects to a Bluetooth device (NMEA GPS) and creates a GPS provider which can be used to replace the internal GPS.
    Downloads: 10 This Week
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  • 21
    Vibrance HDR

    Vibrance HDR

    Create HDR image effect, from a single or multiple (AEB) photos.

    Vibrance HDR is an app for Android(TM), which allows you to create high dynamic range (HDR) images, either from a single photo, or from multiple* auto exposure bracketed (AEB) photos. High-dynamic-range imaging is a technique used in photography to reproduce a greater dynamic range of luminosity. This works best in conjunction with a camera app that supports taking photos at multiple different exposures. However Vibrance HDR also supports creating a "HDR-like" effect from a single photo. [*] Some devices support up to 7 images; others up to 3 images. Note that Vibrance HDR is not intended to be a general purpose photo editor - there are already plenty of free apps for that. Note that creating HDR images from multiple inputs is memory intensive, and even though Android devices may have GBs of RAM, on some devices only a fraction of that may be available for a single application to use. Android is a trademark of Google LLC.
    Downloads: 39 This Week
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  • 22
    Android SQLite Manager
    aSQLiteManager - a SQLite manager for the Android platform. If the database is stored on the SDCard you can browse the data, change records and query the data. By installing aShell you can also edit system databases on rootet phones. Help improving the translation here: https://crowdin.com/project/asqlitemanager
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    Downloads: 7 This Week
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  • 23
    GpsMid
    Java Midlet to use OpenStreetMap data on a J2ME ready Mobile. Displays a moving map using external or internal GPS, shows the street name on which you are. There is Navigation support for car drivers, bicyclists and pedestrians plus many more ...
    Downloads: 5 This Week
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  • 24
    Android Screenshots and Screen Capture
    Screen capturing tool for Android handsets connected via USB to a desktop/laptop. It is great for fullscreen presentations, product demos, automatic screen recording, or just a single screenshot. Without root.
    Downloads: 8 This Week
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  • 25
    Android Hidden APIs

    Android Hidden APIs

    A library that provides access to Android hidden APIs

    Android Hidden APIs are classes, methods, and resources that Google hides from you because of stability reasons. These features are hidden because they may be changed on next API version. The internal APIs are located in package com.android.internal and available in the framework.jar, while the hidden APIs are located in the android.jar file with @hide javadoc attribute. Now you know the difference. But I will refer to both as hidden APIs. This repo contains a custom android.jar which you can use to develop your app.
    Downloads: 1 This Week
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