Open Source Java Software Development Software - Page 5

Java Software Development Software

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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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  • 1
    HikariCP

    HikariCP

    A solid, high-performance, JDBC connection pool at last

    HikariCP is a high-performance JDBC connection pooling library designed to offer minimal overhead and maximum throughput. It aims for simplicity and stability, concentrating on fast connection acquisition and minimal latency under load. Its internals manage a pool of connections aggressively but smartly, with options such as leak detection, timeout thresholds, and adaptive connection retirement. Because it avoids heavy internal locking, it scales well in high-concurrency environments, making it a popular choice in microservices and high-throughput web backends. Metrics and instrumentation hooks (for example, via Dropwizard or Micrometer) allow runtime visibility into pool usage and health. HikariCP’s focus is on doing the essential work of pooling correctly and efficiently, rather than bundling extraneous features.
    Downloads: 14 This Week
    Last Update:
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  • 2
    PrettyZoo

    PrettyZoo

    Pretty nice Zookeeper GUI, Support Win / Mac / Linux Platform

    PrettyZoo is a GUI for Zookeeper created by JavaFX and Apache Curator Framework.
    Downloads: 14 This Week
    Last Update:
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  • 3
    OMLX project is a place for processing of many projects to be ready to become open source projects.
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    Downloads: 123 This Week
    Last Update:
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  • 4
    AnLinux

    AnLinux

    AnLinux allow you to run Linux on Android without root access

    AnLinux allow you to run Linux on Android without root access. The bash script downloads the image over the internet, then decompresses the image, and then mounts it using PRoot.
    Downloads: 13 This Week
    Last Update:
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  • 5
    JUnit 4

    JUnit 4

    A programmer-oriented testing framework for Java

    JUnit is a simple framework to write repeatable tests. It is an instance of the xUnit architecture for unit testing frameworks. You need to have a JDK installed and a text editor. (In general it is recommended to use a build tool for building your software and running the tests.). JUnit features include assertions for testing expected results, test fixtures for sharing common test data, test runners for running tests. JUnit was originally written by Erich Gamma and Kent Beck. JUnit is Open Source Software, released under the Eclipse Public License Version 1.0. JUnit celebrates programmers testing their own software. In this spirit, bugs, patches, and feature requests that include JUnit tests have a better chance of being addressed than those without.
    Downloads: 13 This Week
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  • 6
    SGDK 1.90

    SGDK 1.90

    A free and open development kit for the Sega Mega Drive

    SGDK is a free development kit allowing the development of software in C language for the Sega Mega Drive. It contains the development library itself (with the code sources) and some custom tools used to compile resources. SGDK uses the GCC compiler (m68k-elf target) and the libgcc to generate a ROM image. Binaries (GCC 6.3) are provided for Windows OS for convenience, but you need to install it by yourself for other operating systems. Note that SGDK also requires Java (custom tools require it), so you need to have Java installed on your system. SGDK library and custom tools are distributed under the MIT license (see license.txt file). GCC compiler and libgcc are under GNU license (GPL3) and any software build from it (as the SGDK library) is under the GCC runtime library exception license.
    Downloads: 13 This Week
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  • 7

    Ekushey

    Bangla Computing and Localization Project

    Bangla Computing and Localization Project for the Bangla speaking people.
    Downloads: 97 This Week
    Last Update:
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  • 8
    LaTeXDraw

    LaTeXDraw

    Vector drawing program for LaTeX using PSTricks

    LaTeXDraw is a graphical drawing editor for LaTeX. LaTeXDraw can be used to 1) generate PSTricks code; 2) directly create PDF or PS pictures.
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    Downloads: 65 This Week
    Last Update:
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  • 9
    Aliucord

    Aliucord

    A modification for the Discord Android App

    Aliucord is a modification for the Android Discord app.
    Downloads: 12 This Week
    Last Update:
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  • 10
    Apache Maven

    Apache Maven

    Apache Maven core

    Maven is a project development management and comprehension tool. Based on the concept of a project object model: builds, dependency management, documentation creation, site publication, and distribution publication are all controlled from the pom.xml declarative file. Maven can be extended by plugins to utilize a number of other development tools for reporting or the build process.
    Downloads: 12 This Week
    Last Update:
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  • 11
    FDroid Client

    FDroid Client

    Android client application

    F-Droid Client is an installable catalogue of free and open-source software (FOSS) applications for the Android platform. It allows users to browse, install, and update apps from the F-Droid repository and other compatible sources. F-Droid emphasizes user privacy and security, offering an alternative to proprietary app stores by providing access to transparent and auditable software.​
    Downloads: 12 This Week
    Last Update:
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  • 12
    Skript

    Skript

    Skript is a Bukkit plugin which allows server admins

    Skript is (surprise, surprise) a scripting plugin for the Bukkit platform. It is easy to use for simple tasks, but you can also create really complex things with it. The syntax of Skript is close to English, but it is still not magic. While you might succeed with experimentation for simple tasks, for anything more complex you will need some guidance. You will find all supported features of the plugin here, along with some useful examples. We don't have tutorials yet, but you can find good ones using whatever search engine you prefer. Skript requires Spigot to work. You heard it right, CraftBukkit does not work. Paper, which is a fork of Spigot, is recommended; it is required for some parts of Skript to be available. Skript supports only the latest patch versions of Minecraft 1.9+. For example, this means that 1.16.5 is supported, but 1.16.4 is not. Testing with all old patch versions is not feasible for us.
    Downloads: 12 This Week
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  • 13
    iText

    iText

    iText for Java represents the next level of SDKs for developers

    iText for Java represents the next level of SDKs for developers who want to take advantage of the benefits PDF can bring. Equipped with a better document engine, high and low-level programming capabilities and the ability to create, edit, and enhance PDF documents, iText can be a boon to nearly every workflow. iText Suite refers to the complete line of products comprising the open-source iText Core PDF library and its add-ons. The iText Suite is a fully-featured SDK for PDF development that allows you to seamlessly embed extensive PDF functionality into your software or workflows. The iText Suite builds on over a decade of lessons learned from iText 5 (and iTextSharp) development. The latest release of iText, version 8, is a simpler, more performant and extensible library that is ready to handle the increased challenges of today's document workflows, one add-on at a time.
    Downloads: 12 This Week
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  • 14
    ModbusPal - a Java MODBUS simulator
    ModbusPal is a project to develop a PC-based Modbus simulator. Its goal is to reproduce a realistic environment, with many slaves and animated register values. Almost everything in ModbusPal can be customized and controlled by scripts.
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    Downloads: 135 This Week
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  • 15
    SocketTest - powerful and small software tool for socket testing. It can create both TCP and UDP client or server. It can be used to test any server or client that uses TCP or UDP protocol to communicate.
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    Downloads: 60 This Week
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  • 16
    IntelliJ Plugins

    IntelliJ Plugins

    Open-source plugins included in the distribution of IntelliJ IDEA

    IntelliJ-Plugins is a GitHub organization and central repository collection maintained by JetBrains that hosts a vast ecosystem of plugins extending the functionality of IntelliJ-based IDEs, including IntelliJ IDEA, PyCharm, WebStorm, CLion, and more. These plugins range from language support (e.g., for Rust, Go, or SQL) to productivity tools, UI themes, database helpers, VCS integrations, code analysis tools, and domain-specific utilities that tailor the IDE to different development workflows. By hosting plugin source code publicly, JetBrains promotes transparency, community contribution, and shared ownership of tooling that improves developer productivity and integrates niche technologies into world-class IDEs. Developers can explore design patterns, sample implementations, and extension points used by real plugins, learn how to build their own, or contribute enhancements and bug fixes.
    Downloads: 11 This Week
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  • 17
    MCProtocolLib

    MCProtocolLib

    A library for communication with a Minecraft client/server

    MCProtocolLib is a simple library for communicating with Minecraft clients and servers. It allows developers to build custom bots, clients, or servers for Minecraft with ease.
    Downloads: 11 This Week
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  • 18
    RStudio

    RStudio

    RStudio is an integrated development environment (IDE) for R

    RStudio is a powerful, full-featured integrated development environment (IDE) tailored primarily for the R programming language but increasingly supportive of other languages like Python and Julia. It brings together console, editor, plotting, workspace, history, and file-management panes into a unified interface, helping data scientists, statisticians, and analysts to work more productively. The IDE is cross-platform: there are desktop versions for Windows, macOS and Linux, as well as a server version for remote or multi-user deployment via a web browser. In addition to code editing and execution, RStudio offers extensive support for reproducible research via R Markdown, notebooks, and integration with version control systems like Git and SVN. Package development is built in, with tooling for building, checking, and testing R packages, plus integration with documentation tools, CRAN submission workflows, and project templates.
    Downloads: 11 This Week
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  • 19
    The Ballerina programming language

    The Ballerina programming language

    The Ballerina Programming Language

    Ballerina is an open-source programming language for the cloud that makes it easier to use, combine, and create network services. Network primitives in the language make it simpler to write services and run them in the cloud. Structural types with support for openness are used both for static typing within a program and for describing service interfaces. Type-safe, declarative processing of JSON, XML, and tabular data with language-integrated queries. Explicit error handling, static types, and concurrency safety, combined with a familiar, readable syntax make programs reliable and maintainable. Easy and efficient concurrency with sequence diagrams and language-managed threads without the complexity of asynchronous functions. Programs have both a textual syntax and an equivalent graphical form based on sequence diagrams.
    Downloads: 11 This Week
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  • 20
    WinXP, Vista, Win7, linux, OpenSolaris native port of the BSD PSPSDK (ps2dev.org), with freely distributable import libraries and header files (DevPaks) for building cross compiled homebrew Sony PSP (PlayStation Portable) applications.
    Downloads: 71 This Week
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  • 21
    Yaoqiang BPMN Editor

    Yaoqiang BPMN Editor

    an Open Source BPMN 2.0 / DMN 1.1 Modeler

    Yaoqiang BPMN Editor is a graphical editor for business process diagrams, compliant with OMG specifications (BPMN 2.0 / DMN 1.1).
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    Downloads: 50 This Week
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  • 22
    Pentaho Reporting
    Java class library for generating reports. XML-based templates provide flexible reporting and printing functionality using data from multiple sources and supports output to display devices, printers, PDF, Excel, HTML, XHTML, PlainText, XML and CSV files.
    Downloads: 54 This Week
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  • 23
    Apache Log4j

    Apache Log4j

    Apache Log4j 2 is a versatile, feature-rich, efficient logging API

    Apache Log4j is a versatile, industrial-grade Java logging framework composed of an API, its implementation, and components to assist the deployment for various use cases. Log4j is used by 8% of the Maven ecosystem and listed as one of the top 100 critical open source software projects. The project is actively maintained by a team of several volunteers and supported by a big community.
    Downloads: 10 This Week
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  • 24
    International Components for Unicode

    International Components for Unicode

    The home of the ICU project source code

    ICU is a mature, widely used set of C/C++ and Java libraries providing Unicode and Globalization support for software applications. ICU is widely portable and gives applications the same results on all platforms and between C/C++ and Java software. ICU is released under a nonrestrictive open-source license that is suitable for use with both commercial software and with other open-source or free software. Convert text data to or from Unicode and nearly any other character set or encoding. ICU's conversion tables are based on charset data collected by IBM over the course of many decades and is the most complete available anywhere. Compare strings according to the conventions and standards of a particular language, region or country. ICU's collation is based on the Unicode Collation Algorithm plus locale-specific comparison rules from the Common Locale Data Repository, a comprehensive source for this type of data.
    Downloads: 10 This Week
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  • 25
    JOML

    JOML

    A Java math library for OpenGL rendering calculations

    JOML is a high-performance, lightweight math library designed for 3D graphics applications in Java, particularly those using OpenGL, Vulkan, or LWJGL. It provides a complete suite of vector, matrix, quaternion, and geometry operations essential for real-time graphics and game development. Unlike other math libraries, JOML avoids object allocation during calculations, making it highly optimized for garbage-free performance. With precise control over mathematical operations and compatibility with low-level APIs, JOML is a go-to library for Java developers working on real-time 3D engines and simulations.
    Downloads: 10 This Week
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