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.

  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
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  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
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  • 1
    Portable Java Launcher

    Portable Java Launcher

    PJL - Free Cross-Platform Portable Java Launcher for executable files

    PJL - Free Cross-Platform Portable Java Launcher for executable files = jar, exe, etc. Same as Win Portable Start Menu and other launcher programs. Useful thing for USB and others. Simple and intuitive GUI. Using SwiXML excellent framework - https://swixml.org/ , https://github.com/swixml/Two . Need JRE-1.8: https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html . Source = https://github.com/harp077/pjl . If you like this - put a star on https://github.com/harp077/pjl/ for support project please.
    Downloads: 9 This Week
    Last Update:
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  • 2
    DIET-PC (DIskless Embedded Technology Personal Computer) is a software kitset enabling IT professionals to build an open source GUI appliance based on commodity x86 (PC), PowerPC (Mac) or ARM (handheld) hardware, using an embedded Linux methodology.
    Downloads: 3 This Week
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  • 3
    BrowserChooser
    BrowserChooser 0.2. is a Java-based free-ware tool and was designed to integrate your multi-browser environment. Nevertheless it can handle almost every application or even a single file almost like a real dock-application e.g. YZDock!
    Downloads: 3 This Week
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  • 4
    The Palantir project aims to monitor network health through agents distributed across the network. Each Palantir Agent monitors and tests the network from an enduser point of view and transmits the results to a central facility for analysis.
    Downloads: 3 This Week
    Last Update:
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  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 5
    Shutdown Timer

    Shutdown Timer

    a java app to shutdown your system at a preset time

    a java app to shutdown your system at a preset time CHECK OUT AND SUPPORT MY LATEST ANDROID PROJECTS IN HERE: https://play.google.com/store/apps/developer?id=Deepak+PK
    Downloads: 2 This Week
    Last Update:
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  • 6
    Sakura is a Knowledge Navigator and User Interface for UNIX, which implements HyperMedia and its own windowing and packing system, both in the main program and in an extensive API for Tcl and other languages.
    Downloads: 1 This Week
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  • 7
    The Wizard Desktop is a set of simple applications that maintain a common user experience along with a simple window manager. The underlying framework will allow a single-user multiple network connected computers paradigm. Communications between the framework and applications are standardized, programs can be swapped out at will. Please visit the OpenHub site.
    Downloads: 1 This Week
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  • 8
    Ajax is an open-source Java add-on collection mostly for classic desktop apps sporting new widgets (such as such as auto-complete textboxes or tree tables), new data models (such as as XML tree models), new common dialogs and much more.
    Downloads: 0 This Week
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  • 9
    Launch applications from your usb flash drive without having to change drive letters in shortcuts etc! Features drive letter replacing in files and -flags, easy adding, deleting and editing of applications to start. Soon platform independent with Java!
    Downloads: 0 This Week
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  • Train ML Models With SQL You Already Know Icon
    Train ML Models With SQL You Already Know

    BigQuery automates data prep, analysis, and predictions with built-in AI assistance.

    Build 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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  • 10

    Converse

    Ever had files named in Russian, which failed to be read by devices?

    This application will convert any russian named files into english. For example: Программа into Programma. Even if you have mix of russian and english files it will convert only russian files. If you have a file name mixed of Russian and English it will convert it no problem.
    Downloads: 0 This Week
    Last Update:
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  • 11
    CyberSenioren is a gui-interface for people in later adulthood(Seniors). This interface is a full working environment. It is possible to add own plugins. Also a Manager which makes automatically backups in background is integrated.
    Downloads: 0 This Week
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  • 12
    EBML, or Extensible Binary Meta-Language, is a simple XML like binary language for describing data in structured style. EBML was originally designed for use in the Matroska project, but the developers saw that EBML was very flexible and extensible.
    Downloads: 0 This Week
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  • 13
    JDistro is a project to build a java distribution. The main sub-projects are an application launcher, a swing desktop with document management and an access to remote applications.
    Downloads: 0 This Week
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  • 14
    JFileOrganizator is a program to organize files using interactive methods. You can select and organize a entire directory with clicks. Forget that's copy and paste organize method!
    Downloads: 0 This Week
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  • 15
    JIPM - java interactive process manager
    Downloads: 0 This Week
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  • 16
    Escher is a collection of libraries for X Window System written purely in Java. It consists of an X11 protocol implementation (similar to xlib for C/C++), and its extensions such as GLX, the OpenGL rendering protocol.
    Downloads: 0 This Week
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  • 17
    Java-WebAdmin is a web-enabled tool that supports dynamic modules, Modules are developed independent from the framwork. Examples are File uploading/editing, server administration, e-mail practicly anything can be done!
    Downloads: 0 This Week
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  • 18
    With Javastarter it's easy to create executables for Windows to start java applications. The JVM is dynamically detected and invoked via JNI. The project contains C++ sources which can be customized to generate an individual java launcher.
    Downloads: 0 This Week
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  • 19
    The idea was, make a small java based desktop monitoring system so I could watch remote unix boxes for application crashes. So I wrote a screencap utility, wrapped a VERY simple http server around it, and wala! LazyToes.
    Downloads: 0 This Week
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  • 20
    A search, filter, and "action" utility targeted at power users and developers. Features a graphical and command-line interfaces. Initial version searches for/filters files then does whatever you specify (copy, delete, move…).
    Downloads: 0 This Week
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  • 21
    WeirdX is a pure Java X Window System server.
    Downloads: 0 This Week
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  • 22
    This software records and replays user interaction with the computer. It can be interfaced through voice commands.
    Downloads: 0 This Week
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  • 23
    iMeMex is a dataspace management system. iMeMex is a research prototype. The package also provides several useful components for research such as external sorting, B+-trees, inverted indexes, content converters, query operators, and graph indexes.
    Downloads: 0 This Week
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  • 24
    jsh is a pure java application launcher shell. It provides support for java webstart applicactions, user commands scripts, aliases. It runs all java applications (even .jnlp !) in the same JVM, thus saving memory. It will have an small GUI, automatic ap
    Downloads: 0 This Week
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  • 25
    Netclip is a app for crossplatform copypaste over your (local) network. Developmet of netclip is in progress.
    Downloads: 0 This Week
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