Open Source Java Software - Page 56
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Java Software
Browse free open source Java Software and projects below. Use the toggles on the left to filter open source Java Software by OS, license, language, programming language, and project status.
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Glide
Android image loading & caching library focused on smooth scrolling
Glide is a fast and efficient open source image loading and caching library for Android that focuses on smooth scrolling. It supports fetching, decoding and displaying images, video stills as well as animated GIFs, with a simple and easy to use interface and API. Glide offers a performant and extensible resource decoding pipeline and automatic resource pooling, and a flexible API that allows developers to plug in to just about any network stack. It is primarily focused on making any type of a list of images as smooth and fast as possible, and is able to achieve this through smart and automatic downsampling and caching, aggressive re-use of resources and deep lifecycle integration. Apart from smooth and speedy scrolling, it’s also good for any case where fetching, resizing, and displaying of a remote image is needed. -
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GraphQL Manifold
Manifold is a Java compiler plugin, features include Metaprogramming
Manifold is a Java compiler plugin. It supplements Java with direct, type-safe access to GraphQL, JSON & JSON Schema, YAML, XML, CSV, JavaScript, etc. All fully supported in JDK LTS releases 8 - 19 + latest with comprehensive IDE support in IntelliJ IDEA and Android Studio. Manifold consists of a set of modules, one for each feature. Simply add the Manifold dependencies of your choosing to your existing project and begin taking advantage of them. Favor composition over inheritance. Use @link and @part for automatic interface implementation forwarding and delegation. Use the framework to gain direct, type-safe access to any type of resource, such as GraphQL, JSON, XML, YAML, CSV, and even other languages such as JavaScript. Remove the code gen step in your build process. Use types defined in .graphql files directly, no code gen steps! Make GraphQL changes and immediately use them with code completion. -
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Grasscutter
A server software reimplementation for a certain anime game
Grasscutter is an open-source Java server reimplementation for a certain anime-style online game, created for private server emulation and research. It uses Java 17, MongoDB, and Gradle, and it has an ecosystem that includes documentation, a launcher, plugins, and community tooling. The project allows users to run a compatible server environment for specific supported game client versions, but it is not actively maintained in the same way it once was. Current documentation warns that version matching matters and that support is limited, especially beyond the older supported release range. Grasscutter is most relevant to developers interested in reverse engineering, server emulation, game protocol research, and modding communities. Because it interacts with proprietary game clients and services, it should be used only in lawful, authorized, and non-commercial contexts. -
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Guice
Lightweight dependency injection framework for Java 6 and above
Guice is a lightweight, open source, dependency injection framework for Java 6 and higher. It was made to alleviate the need for factories and using new in your Java code. You would still need to write factories in some cases as you normally would, but with Guice your code will no longer directly depend on these factories. In most cases, they will also be easier to change, unit test and reuse. Guice fills in a lot of the missing features in core Java, and helps to design better APIs. It also aims to make development and debugging faster and easier, enabling you to understand the code with or without tools. -
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IK Analysis for Elasticsearch
A plugin that integrates Lucene IK analyzer into elasticsearch
IK Analyzer is an open source, lightweight Chinese word segmentation toolkit developed based on java language. Since the release of version 1.0 in December 2006, IKAnalyzer has launched 4 major versions. Initially, it was a Chinese word segmentation component based on the open source project Luence as the main application, combined with dictionary word segmentation and grammar analysis algorithms. Starting from version 3.0, IK has developed into a common word segmentation component for Java, independent of the Lucene project, and at the same time provides a default optimized implementation of Lucene. In the 2012 version, IK implemented a simple word segmentation ambiguity elimination algorithm, marking the evolution of the IK tokenizer from pure dictionary word segmentation to analog semantic word segmentation. -
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ImGui Java
JNI based binding for Dear ImGui
imgui-java is a comprehensive Java binding for Dear ImGui, the popular immediate-mode GUI library used for real-time tools and debug interfaces. This binding allows Java applications—including those using LWJGL or JOGL—to leverage ImGui’s fast and flexible GUI features without switching languages. With support for native backends and OpenGL rendering, imgui-java is perfect for game engines, development tools, and editors that need an intuitive GUI system. It includes integrations for multiple platforms and rendering contexts, with regular updates to match upstream ImGui releases. -
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ImmersiveEngineering
Wires, transformers, high voltage
A Minecraft mod that introduces a range of machines and tools inspired by industrial technology. -
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Infinispan
Infinispan is an open source data grid platform
Infinispan is a distributed in-memory data grid and caching system designed for high-performance computing. It allows applications to scale dynamically by distributing data across multiple nodes, reducing latency and improving resilience. -
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Item-NBT-API
Add custom NBT tags to Items/Tiles/Entities without NMS
The NBT API allows you to add custom NBT tags to Itemstacks, TileEntities, and Entities, or modify existing ones. It completely uses reflections to interact with NMS code and works with all the latest versions. On server start the plugin checks all reflections. -
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JBot
Make Slack and Facebook Bots in Java
JBot is a java framework (inspired by Howdyai's Botkit) to make Slack and Facebook bots in minutes. It provides all the boilerplate code needed so that you can make your bot live right away. Provides you with all the boilerplate code which handles underlying WebSocket connections and other complexities. Supports extra events in addition to all the events supported by Slack/Facebook which makes your work a lot easier. Receiving & sending messages is as easy as defining a @Controller and calling reply(). The conversation feature of JBoss makes talking to your bot a breeze. This feature makes JBot different from than rest of the Java frameworks out there. -
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JSqlParser
JSqlParser parses an SQL statement and translate it into a hierarchy
JSqlParser is a SQL statement parser. It translates SQLs in a traversable hierarchy of Java classes. JSqlParser is not limited to one database but provides support for a lot of specials of Oracle, SqlServer, MySQL, PostgreSQL. To name some, it has support for Oracles join syntax using (+), PostgreSQLs cast syntax using ::, relational operators like != and so on. Then the result can be accessed in a structured way. The generated Java class hierarchy can be navigated using the Visitor Pattern. -
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JaCoCo Java Code Coverage Library
Java Code Coverage Library
JaCoCo is a free code coverage library for Java, which has been created by the EclEmma team based on the lessons learned from using and integrating existing libraries for many years. -
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Jaffree
Java ffmpeg and ffprobe command-line wrapper
Jaffree is a Java library that provides a clean and modern API for interacting with FFmpeg, allowing developers to programmatically execute multimedia processing tasks. It abstracts the complexity of command-line FFmpeg usage by offering strongly typed Java classes for configuring inputs, outputs, codecs, and filters. The library supports streaming data, handling real-time processing scenarios, and integrating FFmpeg pipelines directly into Java applications. It is designed for flexibility and performance, enabling both simple conversions and advanced multimedia workflows. Jaffree is particularly useful in backend systems where video or audio processing needs to be automated and integrated into larger applications. -
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Java Design Patterns
Design patterns implemented in Java
A comprehensive, community-maintained collection of design pattern implementations in Java, offering well-documented, educational examples to help developers understand and apply common architectural solutions. All designs should be as simple as possible. You should start with KISS, YAGNI, and Do The Simplest Thing That Could Possibly Work principles. Complexity and patterns should only be introduced when they are needed for practical extensibility. The design patterns are now available as an e-book. Design patterns can speed up the development process by providing tested, proven development paradigms. -
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JavaCore
JavaCore is a summary of experience with Java core technologies
JavaCore is a Chinese-language tutorial focused on the essential technologies and runtime concepts behind Java development. It begins with syntax, data types, object-oriented programming, methods, arrays, exceptions, generics, reflection, annotations, and strings. Advanced material covers regular expressions, encoding, encryption, internationalization, Java 8 features, and the service provider interface. Separate sections explain collections, streams, traditional I/O, NIO, serialization, sockets, and networking. Its concurrency coverage includes threads, locks, atomics, thread pools, concurrent containers, synchronization, and the Java Memory Model. JVM chapters address memory, garbage collection, bytecode, class loading, diagnostics, monitoring, and performance tuning. -
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JavaFX Maven Plugin
Maven plugin for JavaFX
The JavaFX Maven Plugin provides a way to assemble distribution bundles for JavaFX applications (8+) from within Maven. This plugin is essentially a Maven wrapper for the packaging tool that comes with JavaFX, it's called Javapackager. The JavaFX Maven Plugin simplifies the integration of JavaFX applications with Maven, allowing developers to build and package JavaFX applications. -
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JavaGuide
"Java Learning + Interview Guide" covers the core Java knowledge
JavaGuide is an open source knowledge base and learning resource for Java developers, created and maintained by Snailclimb. The project organizes and explains a wide range of Java-related concepts, from language fundamentals to advanced topics such as concurrency, JVM internals, distributed systems, and high availability design. It is especially popular among developers preparing for technical interviews, as it compiles common knowledge points, detailed explanations, and source code analyses that interviewers frequently explore. The repository also includes sections on computer science basics such as operating systems, networks, and data structures, along with practical guides for databases, Redis, MySQL, and MongoDB. Beyond core Java, JavaGuide covers tools like Maven, Docker, Git, and frameworks like Spring, Spring Boot, and MyBatis. Its structured approach makes it a comprehensive handbook for both beginners and experienced backend engineers. -
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JavaMelody
Monitoring of JavaEE applications
The goal of JavaMelody is to monitor Java or Java EE applications in QA and production environments. The goal of JavaMelody is to monitor Java or Java EE applications in QA and production environments. It is not a tool to simulate requests from users, it is a tool to measure and calculate statistics on real operation of an application depending on the usage of the application by users. JavaMelody is open-source (ASL) and production-ready: in production in an application of 25 person-years. JavaMelody is easy to integrate in most applications and is lightweight (no profiling and no database). JavaMelody includes statistics of predefined counters (currently HTTP requests, SQL requests, jsf actions, struts actions, JSP pages, and methods of business façades if EJB3, Spring or Guice) with, for each counter. -
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JavaTutorial
Ten years of experience as a veteran driver in Java technology
Java Tutorial is a large Chinese-language knowledge base built from years of practical Java development experience. It connects core Java material with Java EE, web applications, servers, build systems, testing, monitoring, and deployment tools. The web section covers Servlets, JSP, filters, listeners, cookies, sessions, Tomcat, Jetty, and Nginx. Development tooling includes Maven, Ant, major IDEs, serializers, template engines, logging libraries, and testing utilities. Framework and middleware coverage includes MyBatis, Spring, Spring Boot, security tools, messaging systems, caches, and distributed services. The repository also links related tutorials and ebook pages, making it a navigable roadmap for learners and working Java engineers. -
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JediTerm
Pure Java Terminal Emulator. Works with SSH and PTY
JediTerm is JetBrains’ pure Java terminal emulator library built for embedding terminal functionality inside IDEs and desktop tools. Its main purpose is to provide a reusable terminal widget rather than a full standalone terminal product. It supports terminal sessions over SSH as well as local PTY sessions on macOS, Linux, and Windows. The library is used across JetBrains IDEs, including IntelliJ IDEA, PyCharm, WebStorm, PhpStorm, CLion, AppCode, and Rider. JediTerm handles terminal rendering, shell output interpretation, keyboard input, and integration concerns needed for an embedded terminal experience. It is best suited for developers building Java-based tools that need a mature, IDE-grade terminal component. -
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Jedis
A small redis java client
Jedis is a blazingly small and sane Redis java client. Jedis was conceived to be EASY to use. Jedis is fully compatible with redis 2.8.x, 3.x.x and above. The features supported are sorting, connection handling, commands operating on any kind of values, commands operating on string values, commands operating on hashes, commands operating on lists, commands operating on sets, commands operating on sorted sets, commands operating on streams, transactions, pipelining, publish/subscribe, persistence control commands, remote server control commands, connection pooling, sharding (MD5, MurmurHash), key-tags for sharding, sharding with pipelining, scripting with pipelining, and Redis Cluster. Redis is primarily built for master/slave distribution. This means that write requests have to be explicitly addressed to the master (a redis server), which replicates changes to slaves (which are also redis servers). -
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JeecgBoot
Low-code enterprise web development platform
JeecgBoot is a low-code platform built on Spring Boot that accelerates enterprise application development with online forms, code generation, and a modern Vue-based frontend. It can generate CRUD screens, data dictionaries, and menu structures from database schemas, producing clean starter code that developers can extend. The platform integrates common enterprise features—RBAC permissions, data scopes, dictionary management, logging, and file/OSS integration—so teams start from a production-ready baseline. Workflow and report modules cover approvals and business documents, while visual designers let power users assemble pages without writing HTML. Multi-tenancy, API scaffolding, and pluginable modules make it suitable for both monolith and microservice deployments. In practice, it shortens the path from schema to usable back-office systems, leaving custom logic and integrations as the primary engineering focus. -
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Jib
Containerize your Java application
Containerize your Java application with Jib! Jib builds optimized Docker and OCI images for your Java applications-- no Docker daemon or deep mastery of Docker best-practices required. Jib builds by separating the traditionally single image layer Java application into multiple layers for more granular incremental builds. This results in only changes to your code being rebuilt, not your entire application. Jib deploys your changes fast and allows you to rebuild your container image exactly the same without triggering unnecessary updates. All this done completely daemonless, reducing your CLI dependencies. -
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Kestra
Kestra is an infinitely scalable orchestration and scheduling platform
Build reliable workflows, blazingly fast, deploy in just a few clicks. Kestra is an open-source, event-driven orchestrator that simplifies data operations and improves collaboration between engineers and business users. By bringing Infrastructure as Code best practices to data pipelines, Kestra allows you to build reliable workflows and manage them with confidence. Thanks to the declarative YAML interface for defining orchestration logic, everyone who benefits from analytics can participate in the data pipeline creation process. The UI automatically adjusts the YAML definition any time you make changes to a workflow from the UI or via an API call. Therefore, the orchestration logic is defined declaratively in code, even if some workflow components are modified in other ways. -
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Lightweight-Stream-API
Stream API from Java 8 rewritten on iterators for Java 7 and below
Stream API from Java 8 rewritten on iterators for Java 7 and below.
