Open Source Java Software - Page 26
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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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Ship Agents FasterGemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.
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Train ML Models With SQL You Already KnowBuild and deploy ML models using familiar SQL. Automate data prep with built-in Gemini. Query 1 TB and store 10 GB free monthly.
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AtlantaFX
Modern JavaFX CSS theme collection with additional controls
Modern JavaFX CSS theme collection with additional controls. -
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BinExport
Export disassemblies into Protocol Buffers
BinExport is a disassembly export plugin developed by Google as part of the BinDiff ecosystem, designed for reverse engineering and binary analysis. It works with popular disassemblers including IDA Pro, Binary Ninja, and Ghidra, enabling the export of disassembly data into a structured Protocol Buffer format. This exported data can then be used for binary comparison, diffing, and advanced analysis tasks through BinDiff or other compatible tools. BinExport captures detailed information such as instructions, functions, control flow graphs, and metadata, providing a machine-readable representation of a program’s disassembled structure. It supports multiple export formats, including binary, text, and statistics outputs, and can be used interactively or via scripting (IDC, IDAPython, or Ghidra’s headless mode). The project includes complete build instructions for Linux, macOS, and Windows, ensuring reproducibility across platforms. -
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Conscrypt
Conscrypt is a Java Security Provider
Conscrypt is a modern TLS/SSL provider for Java that replaces the default JCE/JCA crypto stack with one backed by BoringSSL for better performance and security posture. It is implemented as a drop-in SecurityProvider, so applications and frameworks can opt in without changing high-level HTTPS or socket code. The provider focuses on contemporary protocol hygiene—up-to-date cipher suite selection, ALPN, session resumption, and hardened defaults—so Java servers and clients negotiate secure connections by construction. Because it builds on BoringSSL’s audited primitives and constant-time implementations, it reduces the risk of subtle side-channel issues while improving handshake and bulk crypto throughput. Conscrypt also exposes platform accelerations (like AES-GCM and ChaCha20-Poly1305) and supports features important to HTTP/2 and HTTP/3 stacks. Its goal is pragmatic: deliver a fast, well-maintained TLS provider that behaves like modern browsers and mobile stacks. -
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Datalevin
A simple, fast and versatile Datalog database
Datalevin is an open-source Datalog-based database written in Clojure that runs natively on top of LMDB. It supports full ACID transactions, schema-less EDN data storage, vector search with SIMD acceleration, and text-based querying. Usable as an embedded library or as a client/server database with RBAC access, it acts like SQLite or Datomic on a ledger of immutable datoms, plus modern features like vector and full-text search. -
Build Securely on AWS with Proven FrameworksMoving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
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Discourse Network Analyzer (DNA)
Discourse Network Analyzer (DNA)
The Java software Discourse Network Analyzer (DNA) is a qualitative content analysis tool with network export facilities. You import text files and annotate statements that persons or organizations make, and the program will return network matrices of actors connected by shared concepts. -
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EnvFile
EnvFile 3.x is a plugin for JetBrains IDEs
Env File is a plugin for JetBrains IDEs that allows you to set environment variables for your run configurations from one or multiple files. Not all run configurations available in IDEA-based IDEs are implemented similarly. Some of them differ significantly. In certain cases (so far, only Gradle has been confirmed) the implementation exposes interfaces to integrate the EnvFile UI but doesn't provide interfaces for it to actually make its work. Luckily, it was possible to make few assumptions about IDEA's internal implementation and make it work. Such integration is very fragile and it's not immediately clear if it will affect any existing integrations and when it will break. For that reason there is a special option to Enable Experimental Integrations that can be enabled when desired and should prevent other integrations from breaking. -
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FFmpeg-Video-Editor
Sample android project using ffmpeg for cutting and compressing video
FFmpeg-Video-Editor-Android is an Android application project that demonstrates how to implement video editing features using FFmpeg within a mobile environment. It provides tools for trimming, merging, and converting video files directly on the device without relying on external services. The project integrates FFmpeg libraries with Android components, enabling efficient media processing through native execution. It includes a user interface that allows users to select files, configure operations, and preview results. The application is designed as both a functional editor and a learning resource for developers exploring multimedia processing on Android. It emphasizes ease of integration and real-time feedback during editing operations. Overall, it showcases how to build a mobile video editor powered by FFmpeg. -
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Feign
Make writing Java http clients easier
Feign is a Java to HTTP client binder that was built primarily to make writing Java http clients easier. Inspired by previous projects Retrofit, JAXRS-2.0 and WebSocket, Feign was designed to reduce the complexity that is often involved in binding the Denominator uniformly to HTTP APIs, no matter the ReSTfulness. Feign works by processing annotations into a templatized request, to which arguments are applied in a straightforward manner before output. While it may only support text-based APIs, it simplifies system aspects dramatically and makes it much easier to unit test your conversions. Feign makes use of great tools like Jersey and CXF for writing Java clients for ReST or SOAP services. It also lets you write your own code on top of http libraries, and connects your code to http APIs with little overhead. -
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IoTDB
Apache IoTDB
Apache IoTDB (Database for Internet of Things) is an IoT native database with high performance for data management and analysis, deployable on the edge and the cloud. Due to its light-weight architecture, high performance and rich feature set together with its deep integration with Apache Hadoop, Spark and Flink, Apache IoTDB can meet the requirements of massive data storage, high-speed data ingestion and complex data analysis in the IoT industrial fields. In the scene of factories, there are tens of devices under LAN network. IoTDB can be installed on a local controller server in the factory to receive data from those devices. The local controller server (normal PC or workstation) with IoTDB can provide the ability to persist data and query data with SQL-like interface. In addition, with TsFile-Sync tool, TsFiles on the local controller can be transmitted to the data center equipped with IoTDB instance in the cloud. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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JFlex
The fast scanner generator for Java™ with full Unicode support
JFlex is a lexical analyzer generator for Java, designed to create fast and efficient scanners. It takes regular expression specifications and produces Java code for tokenizing input text. -
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Java API for GitHub
Java API for GitHub
This library defines an object oriented representation of the GitHub API. By "object oriented" we mean there are classes that correspond to the domain model of GitHub (such as GHUser and GHRepository), operations that act on them as defined as methods (such as GHUser.follow()), and those object references are used in favor of using string handle (such as GHUser.isMemberOf(GHOrganization) instead of GHUser.isMemberOf(String)) The library supports both github.com and GitHub Enterprise. Most of the GitHub APIs are covered, although there are some corners that are still not yet implemented. The library allows connecting to GitHub via several different authentication mechanisms. This library defines a common convention so that applications using this library will look at a consistent location. In this convention, the library looks at ~/.github property file. The content of the files depends on the way you want this library to authenticate as shown. -
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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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Joern
Open-source code analysis platform for C/C++/Java/Binary/Javascript
Joern is a platform for analyzing source code, bytecode, and binary executables. It generates code property graphs (CPGs), a graph representation of code for cross-language code analysis. Code property graphs are stored in a custom graph database. This allows code to be mined using search queries formulated in a Scala-based domain-specific query language. Joern is developed with the goal of providing a useful tool for vulnerability discovery and research in static program analysis. -
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Juggling Lab
Juggling Lab juggling animator
Juggling Lab is an open-source juggling simulation and animation software designed to visualize juggling patterns. It allows users to create, simulate, and analyze various juggling sequences, offering both 2D and 3D visualizations. Juggling Lab is highly customizable, supporting complex patterns and siteswap notation, making it a valuable tool for jugglers, performers, and enthusiasts looking to practice or study new routines. -
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Logstash
Centralize, transform and stash your data
Logstash is a server-side data processing pipeline that dynamically ingests data from numerous sources, transforms it, and ships it to your favorite “stash” regardless of format or complexity. It supports and ingests data of all shapes, sizes and sources, dynamically transforms and prepares this data, and transports it to the output of your choice. Logstash is extensible, with over 200 plugins available to let you create and configure your pipeline how you choose. -
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Lombok
New additions to the Java programming language
Project Lombok is a java library that automatically plugs into your editor and build tools, spicing up your java. Never write another getter or equals method again, with one annotation your class has a fully featured builder, Automate your logging variables, and much more. Project Lombok is available as a single jar file on the project site. It includes the APIs for development as an installer for IDE integration. On most systems, simply double-clicking the jar file will launch the installer. The installer will attempt to detect the location of a supported IDE. If it cannot correctly determine where the IDE is installed, the location can be specified manually. Simply click "Install/Update," and IDE integration is complete. There are a number of annotations in Project Lombok to allow for more fine grained control over the structure and behavior of a class. -
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Opik
Debug, evaluate, and monitor your LLMapps, RAG systems, and agentic AI
Confidently evaluate, test, and monitor LLM applications. Opik is an open-source platform for evaluating, testing, and monitoring LLM applications. Built by Comet. Record, sort, search, and understand each step your LLM app takes to generate a response. Manually annotate, view, and compare LLM responses in a user-friendly table. Log traces during development and in production. Run experiments with different prompts and evaluate against a test set. Choose and run pre-configured evaluation metrics or define your own with our convenient SDK library. Consult built-in LLM judges for complex issues like hallucination detection, factuality, and moderation. -
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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! -
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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 be easy to unit test and reason about in isolation. Individual RIB classes have distinct responsibilities like routing, business, view logic, creation. Plus, most RIB logic is decoupled from child RIB logic. This makes RIB classes easy to test and reason about independently. Tooling for developer productivity. RIBs come with IDE tooling around code generation, memory leak detection, static analysis and runtime integrations. -
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RuoYi Vue3
RuoYi Java rapid-development platform
RuoYi-Vue3 is the Vue 3 frontend edition of the RuoYi Java rapid-development platform. It uses Vue 3, Vite, Element Plus, Pinia, and Vue Router 4 for a modern separated frontend architecture. It pairs with the RuoYi backend, which provides authentication, authorization, and business services. The interface includes administration for users, departments, positions, menus, roles, dictionaries, parameters, and notices. It also supports logs, online-user monitoring, scheduled tasks, code generation, API documentation, and system monitoring. The project is positioned as the actively promoted JavaScript-based Vue 3 variant for building administrative and enterprise applications. -
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Slimefun 4
A unique Spigot/Paper plugin that looks and feels like a modpack
A Minecraft plugin adds hundreds of new features, such as advanced machines and magic, to enhance vanilla gameplay. -
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Source Code Hunter
Source code analysis of Spring, MyBatis, Redis, Netty, and more
Source Code Hunter is an open source project by Doocs that focuses on analyzing and explaining the source code of widely used Java frameworks and libraries. It helps developers deepen their understanding of internal implementations, design patterns, and performance optimizations by walking through actual codebases such as Spring, MyBatis, Netty, Tomcat, and others. The project aims to bridge the gap between theoretical knowledge and real-world application by providing step-by-step annotated explorations of core components in these frameworks. It’s a valuable resource for Java developers preparing for interviews, system design discussions, or those looking to strengthen their ability to read and learn from production-level code. -
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SpotBugs
A tool for static analysis to look for bugs in Java code
SpotBugs is a program that uses static analysis to look for bugs in Java code. It is free software, distributed under the terms of the GNU Lesser General Public License. SpotBugs is a fork of FindBugs (which is now an abandoned project), carrying on from the point where it left off with the support of its community. Please check the official manual for details. SpotBugs requires JRE (or JDK) 1.8.0 or later to run. However, it can analyze programs compiled for any version of Java, from 1.0 to 1.9. To build the SpotBugs plugin for Eclipse, you'll need to create the file eclipsePlugin/local.properties, containing a property eclipseRoot.dir that points to an Eclipse installation's root directory (see .travis.yml for an example), then run the build. -
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Spring Boot Demo
A project for in-depth study and practical application of Spring Boot
This repository is a hands-on, “deep learning by doing” collection of Spring Boot demos that you can run and study module by module. It currently includes 66 planned integrations (with 55 completed) spanning monitoring, logging, templating, data access, caching, messaging, scheduling, search, security, and more. The master branch targets Spring Boot 2.1.0.RELEASE with a parent POM that centralizes common dependency versions; the older v-1.5.x branch is frozen and its contents are being migrated to master. Each demo ships with its own README and some require pre-initialized database data before launching. The project outlines a standard development environment (JDK 8+, Maven 3.5+, IntelliJ IDEA with Lombok, MySQL 5.7+) and simple run instructions—clone, open in IDEA, import Maven, and run the module’s Application class. It’s intended as a practical reference you can fork, explore, and extend. -
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XPipe
Your entire server infrastructure at your fingertips
Introducing the brand-new shell connection hub and remote file manager that is ready to take on the challenges of modern infrastructure. XPipe takes a completely new approach to handling shell connections, which makes it possible to provide features that you can't find anywhere else. Explore what makes XPipe stand out. All SSH user and system configuration settings are automatically applied. Your existing SSH agent can be utilized to securely authenticate, there is no need to provide your keys and passwords. Supports the use of gateways and jump servers to establish connections via intermediate systems. Support for all types of SSH tunnels plus a dynamic state control to quickly open and close tunnels in the background.
