Open Source Java Software Development Software
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Java Software Development Software
Browse free open source Java Software Development Software and projects below. Use the toggles on the left to filter open source Java Software Development Software by OS, license, language, programming language, and project status.
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Cloud tools for web scraping and data extractionAutomate web data collection with cloud tools that handle anti-bot measures, browser rendering, and data transformation out of the box. Extract content from any website, push to vector databases for RAG workflows, or pipe directly into your apps via API. Schedule runs, set up webhooks, and connect to your existing stack. Free tier available, then scale as you need to.
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libjpeg-turbo
SIMD-accelerated libjpeg-compatible JPEG codec library
libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2, NEON, AltiVec) to accelerate baseline JPEG compression and decompression on x86, x86-64, ARM, and PowerPC systems. On such systems, libjpeg-turbo is generally 2-6x as fast as libjpeg, all else being equal. On other types of systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by virtue of its highly-optimized Huffman coding routines. In many cases, the performance of libjpeg-turbo rivals that of proprietary high-speed JPEG codecs. libjpeg-turbo implements both the traditional libjpeg API as well as the less powerful but more straightforward TurboJPEG API. libjpeg-turbo also features colorspace extensions that allow it to compress from/decompress to 32-bit and big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java interface. -
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EMV NFC Paycard Enrollment
A Java library used to read and extract data from NFC EMV credit cards
Java library used to read and extract public data from NFC EMV credit cards. -
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UnboundID LDAP SDK for Java
A Java-based LDAP API
A fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication. -
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WebRTC Android
webrtc VideoCall VideoConference
WebRTC Android is a sample project that showcases how to implement real-time peer-to-peer communication (audio, video, and data) on Android using WebRTC. It demonstrates a complete pipeline—from signaling and connection setup to media capture and transmission—making it an excellent reference for developers looking to integrate WebRTC into their mobile apps. The project includes UI components and handles network state changes, codec configuration, and ICE negotiation to provide a robust base for real-world applications. -
Atera all-in-one platform IT management software with AI agentsAtera’s AI agents don’t just assist, they act. From detection to resolution, they handle incidents and requests instantly, taking your IT management from automated to autonomous.
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This project provides a generic CDS (or ARINC 661 Server), coded in the Java language in order to facilitate the understanding of the ARINC 661 standard, prototype ARINC 661 concepts and architectures, etc… This project is managed by Dassault Aviation.
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Xabber
Open-source XMPP client for Android
Open source Jabber (XMPP) client with multi-account support, clean and simple interface. Being both free (as in freedom!) and ad-free, Xabber is designed to be the best Jabber client for Android. Xabber uses Gradle build system. The only specific thing is git submodule for the MemorizingTrustManager library. Since it’s inception in 2011, Xabber has grown to be a number one XMPP client for Android. It is fast, reliable and packed with lots of features that make it more advanced than most desktop clients. Xabber interface was perfected over many years to give a very clear yet informative presentation of your contacts and chats. Great amount of details are shown in a subtle way to not obscure your view. Internet connection is not as reliable as we’d like on mobile networks, users often experience connection loss. Xabber for Android was optimized to ensure low battery usage and to quickly reconnect. -
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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 topics receive attention, such as memory management, threading, WorkManager, networking, and offline storage patterns. The content favors concise, practical answers that interviewers expect, helping candidates rehearse concepts and trade-offs rather than memorize trivia. It’s equally useful for brushing up before an interview and for leveling up day-to-day Android engineering knowledge. -
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Shortbread
Android library that creates app shortcuts from annotations
Android library that generates app shortcuts for activities and methods annotated with @Shortcut. No need to touch the manifest, create XML files or use the shortcut manager. Just annotate the code that you want the shortcut to call. -
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JVx - Enterprise Application Framework
Java Application Framework
Develop professional database applications, highly performant with little source code. JVx is a full-stack application framework to create multi tier applications with Single Sourcing for different technologies (Swing, vaadin, react, ...). Nightly builds are available: https://dev.sibvisions.com/jvx.nightly/ Maven snapshots are available: https://oss.sonatype.org/content/repositories/snapshots Eclipse plugin is available: http://marketplace.eclipse.org/search/site/eplug -
Grafana: The open and composable observability platformGrafana is the open source analytics & monitoring solution for every database.
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Swing ME
Java UI Framework for Desktop/iOS/Android
A Pure Java implementation of Swing GUI, with Layouts, Borders, Renderers and lots of components including inline TextField, Buttons, Window, TabbedPane and many others. ALL visual and behavioural aspects can be fully customised of ANY component. -
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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.
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Symja Java Computer Algebra
Symja - Java computer algebra language & symbolic math library
Symja - computer algebra language and Java symbolic math library. Moved to https://github.com/axkr/symja_android_library. The Android App can be found at: https://github.com/axkr/symja-example -
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Jadex is a Belief Desire Intention (BDI) reasoning engine that allows for programming intelligent software agents in XML and Java. The resoning engine is very flexible.
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The GUIDOLib provides a powerful engine for the graphic rendering of music scores, based on the Guido Music Notation format. It supports Linux, Mac OS X, Windows, Android and iOS operating systems. A Java JNI interface is available as well as a Javascript version of the library. A Web API has also been designed, allowing to deploy the engine as a Web service.
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Microlog is a small, yet powerful logging library for mobile devices based on the Log4j API. Supports Java ME (J2ME) and Android. Logs to device, to PC or to servers online. Used in all phases from development on emulator/device to outdoor field-testing.
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AL-IV
ALFOUR Programming language. Simple, safe, power, multi-platform.
A programming language AL-IV (ALFOUR) is a high-level imperative object oriented programming language with minimal introduction level, easy porting to any platform claiming a very high level of safety and stability, with a controllable level of code protection, high efficiency of an executable code, full independence from a target platform, minimal enter level. -
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BeigeUML
UML diagram editor
BeigeUML is an UML diagram editor. It has two user interfaces - ordinary desktop SWING and Android. Features: 1. Supports UML 2.4.1 compliant class diagram, package diagram, object diagram, sequence diagram and use case diagram. 2. It generates UML class diagram from Java source. 3. It's a doclet that generates standard Javadoc with UML class diagram. This application you can download from Central Maven Repository: https://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.beigesoft%22. There beige-uml-swing-[VERSION]-jar-with-dependencies.jar is Swing application and beige-uml-android-[VERSION].apk is Android application. Android version you can find also in Google Play Store. Its source code you can download at https://github.com/demidenko05/beige-uml Source of beige-android-demo (demo of Android tree/file-chooser, list-chooser etc.) still here. -
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Magic Lantern
Build Cross-platform Applications
Magic Lantern is a framework for developing multimedia applications. It is designed to be a cross-platform solution for multiple targets such as desktops, game consoles, mobile devices and set-top boxes. -
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Alida
An annotation based Java Validation Framework for Java Classes
- Alida is a lightweight API for validating Java objects. -“Alida” comes from pruning the word “vALIDAtion”. It also means a “Winged creature”. It can give programmers “wings” by delegating the validation to another API. - Alida uses only annotations for ‘marking up’ the objects which need to be validated. - It is packaged as a jar file (alida.jar) which can be dropped in the classpath and used. It can also be configured with eclipse’s annotation processing to give complier errors and warnings at the time of usage. - It works on Java 1.6 and above -
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Blue Basin
General template for expressions using Lisp-like structures.
A group of generic tools and containers for using in logical and mathematical terms. Lisp like type-safe n-Trees. -
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BottomDialogs
An Android library that shows a customizable Material-based bottom
Android Library that shows a customizable Material-based bottom sheet. -
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Bracer
Repository has been moved to: http://dtitov.github.com/bracer
Java library for parsing and evaluating math expressions. Javadoc is available at http://bracer.sourceforge.net/javadoc/ P.S. This library depends on Apache Commons Math, so don't forget to include commons-math-2.2.jar to your project. -
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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. -
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C-Lesh and SMW Engine
C-Lesh is a game programming language for 2D games.
C-Lesh is a game programming language for 2D games - mainly arcade and platform games. When combined with the Super Mario World (SMW) engine you can create awesome 2D platform games like Super Mario World. This language evolved from a "clone" of TI-BASIC which I began developing when I was having memory (segmentation fault) bugs with C. C-Lesh lacks memory allocation and destruction. There is no need to use pointers and you can never get memory leaks or program crashes caused by memory leaks. As C-Lesh is somewhat primitive you may like it if you are into C. I'd say its a step up from C for 2D games. Everything is set - all you need is a sprite sheet and some programming knowledge. -
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