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

  • Retool your internal operations Icon
    Retool your internal operations

    Generate secure, production-grade apps that connect to your business data. Not just prototypes, but tools your team can actually deploy.

    Build internal software that meets enterprise security standards without waiting on engineering resources. Retool connects to your databases, APIs, and data sources while maintaining the permissions and controls you need. Create custom dashboards, admin tools, and workflows from natural language prompts—all deployed in your cloud with security baked in. Stop duct-taping operations together, start building in Retool.
    Build an app in Retool
  • Atera all-in-one platform IT management software with AI agents Icon
    Atera all-in-one platform IT management software with AI agents

    Ideal for internal IT departments or managed service providers (MSPs)

    Atera’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.
    Learn More
  • 1
    Allows editing of any size file in hexadecimal, decimal and ASCII. A great tool that allows you to edit and analyze the contents for either the data or resource fork of any type of file. 68K, PPC and Carbon run on MacOS 7-9 and X.
    Leader badge
    Downloads: 207 This Week
    Last Update:
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  • 2
    ZK - Simply Ajax and Mobile
    ZK is an open-source Java framework for building modern web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.
    Downloads: 4 This Week
    Last Update:
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  • 3
    To provide a bunch of useful applications for daily use. The first of those applications was donated by NIH\'s DECA, it\'s called REX and is a Request/Bug tracker. All applications will be Struts 1.1 and greater based.
    Downloads: 0 This Week
    Last Update:
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  • 4
    JMichelle is a project for develop free software shell programs written in JAVA. <OL> <LI>JMichelleSui (GUI Filemanager written in Java and SWT)<br> (*)SWT is widget API of Eclipse. <LI>JMichelle Console (CUI Shell program written in Java) </OL>
    Downloads: 0 This Week
    Last Update:
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  • Find Hidden Risks in Windows Task Scheduler Icon
    Find Hidden Risks in Windows Task Scheduler

    Free diagnostic script reveals configuration issues, error patterns, and security risks. Instant HTML report.

    Windows Task Scheduler might be hiding critical failures. Download the free JAMS diagnostic tool to uncover problems before they impact production—get a color-coded risk report with clear remediation steps in minutes.
    Download Free Tool
  • 5
    JMidoriService is the middleware to make Java application work as a Windows XP/2000/NT4.0 service. It has coped with the problem that a service is suspended since the Windows user who generally tends to cause a trouble logs off.
    Downloads: 0 This Week
    Last Update:
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  • 6
    A Java application framework that provides services common to most GUI application domains such as window management, option management and service location. OPA's ultimate goal is to build an instant print management system on top of this framework.
    Downloads: 0 This Week
    Last Update:
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  • 7
    PTLog focuses on pluggability of underlying logging frameworks, type-based categorization and some formatting utility on Logging. PTLog does not compete against any other logging frameworks, but can co-operate with them as abstraction layer on them.
    Downloads: 0 This Week
    Last Update:
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  • 8
    Transliterator between any Language files - Map Fonts, Create Encoding Scheme, Input Phonetic, Indian, Roman, Tamil, Hindi, English, French, German, Spanish or Any World Language Keyboard. Ex: [Phonetic Input]-[Any World Language Output] or ViceVersa.
    Downloads: 0 This Week
    Last Update:
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  • 9
    VAInstall is a multi-platform installer written in Java. It allows complete remapping of files from the packager's host to the end-users's host. There are two graphic and two text-based look&feels.
    Downloads: 0 This Week
    Last Update:
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  • Automated RMM Tools | RMM Software Icon
    Automated RMM Tools | RMM Software

    Proactively monitor, manage, and support client networks with ConnectWise Automate

    Out-of-the-box scripts. Around-the-clock monitoring. Unmatched automation capabilities. Start doing more with less and exceed service delivery expectations.
    Learn More
  • 10
    Xeditium is a framework of extensible XML document editior/browser with Swing and Web interfaces on a recursive bootstrap mechanism of JavaWebStart. It launches Tapestry/Jetty httpd internally and serves dynamic generated JNLP files.
    Downloads: 0 This Week
    Last Update:
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