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

    SonicReader

    Sonicwall Configuration File Reader

    SonicReader is used to view and save reports of the internals of a Sonicwall Configuration file. This is useful for those people that wish to know the settings within their saved Sonicwall Configs. I have no affiliation with Dell Sonicwall. Please do not contact Dell Sonicwall regarding the use of this program.
    Downloads: 10 This Week
    Last Update:
    See Project
  • 2
    The Neverhood Restoration
    Be warned this project was discontinued in 2013 and has not been updated in years.
    Downloads: 35 This Week
    Last Update:
    See Project
  • 3
    This is a network simulator. This is meant to be user friendly as well as feature rich. This field lacks software with good user interface. Even the commercial softwares in this field is quite lame. This aimed to go along Multisim(R) and Blender(R) form
    Downloads: 14 This Week
    Last Update:
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  • 4
    Oracle Dump Tools
    Downloads: 10 This Week
    Last Update:
    See Project
  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

    Grafana is the open source analytics & monitoring solution for every database.
    Learn More
  • 5
    BT-Sim is a BlueTooth simulator on a HCI level. The project alows to develop and test BT applications without using real BT hardware. It works in particular with PalmSource's Palm OS Simulator.
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    Downloads: 6 This Week
    Last Update:
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  • 6
    This project provides a graphical user interface for the PAQ compression program. It is written in Java.
    Downloads: 6 This Week
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    See Project
  • 7
    "girtools" is an implementation of Grid Information Retrieval (GIR). GIR is an emerging open standard for IR on the grid designed to allow dynamic, secure creation and searching of distributed information systems.
    Downloads: 5 This Week
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  • 8
    Raindrop is a Java based framework based on SEDA (Staged Event Driven Architecture) principles. It focuses on providing highly concurrent server side throughput by managing and controlling Thread usage and concurrency primitives.
    Downloads: 4 This Week
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  • 9
    Downloads: 2 This Week
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    See Project
  • Lightspeed golf course management software Icon
    Lightspeed golf course management software

    Lightspeed Golf is all-in-one golf course management software to help courses simplify operations, drive revenue and deliver amazing golf experiences.

    From tee sheet management, point of sale and payment processing to marketing, automation, reporting and more—Lightspeed is built for the pro shop, restaurant, back office, beverage cart and beyond.
    Learn More
  • 10
    jShrinker is written in Java and can de/compress 7zip*, zip, bzip2, tar, lzma, rar, and gzip formats. It aims to be cross-platform and to provide an easy-to-use interface. It will include these features: batch decompression. *Decompress only
    Downloads: 2 This Week
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  • 11
    Emutils

    Emutils

    Search and manage batches of D64/etc files.

    Emutils are a collection of utilities for dealing with files which are in formats most commonly used by Commodore 64 emulators (D64, D71, D81, etc). These include search tools, extractors, converters, archive tools, etc. especially for batch operations.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 12
    Driver support for 3D Controller Hardware. We hope to support SDL Input, DirectInput, and other major controller API's including game consoles and embedded systems.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 13
    Bossman is a web based system monitor and management console for the JBoss/Tomcat application server. The target audience is System Administrators and Technical End-Users.
    Downloads: 1 This Week
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    See Project
  • 14
    FileTools

    FileTools

    File Tools is a convenience tool to manager different file system.

    File Tools is a convenience tool to manager different file system(based on Eclipse RCP). It supports mass rename, files/directories compare, advanced search/replace, directories synchronization, cross-platform, etc. Currently, this project is under developing, any idea is welcome.
    Downloads: 1 This Week
    Last Update:
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  • 15
    GAMA is intended to ease administration of multiple game servers on distributed hosts on a TCP/IP network. It is especially usefull if you have to administer several gameserver for a tournament at a LAN Party.
    Downloads: 1 This Week
    Last Update:
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  • 16
    JKnightCommander is a NortonCommander like file manager written in Java. We are going to implement the following features: -cross-platform -FTP, SMB, IO, ZIP, Webdav -fast but nice, graphical user interface -multi language -ui configureable -file
    Downloads: 1 This Week
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  • 17
    JPresence is a mobile positioning system based on the Bluetooth technology. The idea is to use Bluetooth enabled computers/laptops/cellphones to create a free and inexpensive worldwide mobile positioning system.
    Downloads: 1 This Week
    Last Update:
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  • 18
    Pure Java full-featured multi-player gaming system Pluggable, configurable game engine Distributable, load-balancing, "world engine". flocking, Genetic Algorithms and neural networks 3D clients, ZMUD(tm) clients, regular TELNET access (TCP/UDP
    Downloads: 1 This Week
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  • 19
    OpenR

    OpenR

    Open-source (and portable) alternative for Total Commander

    Downloads: 1 This Week
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    See Project
  • 20
    Role Manager is a security management framework based on the NIST model for Role Based Access Control (RBAC) and the Java[TM] 2 Platform security standards. The access control policies and the RBAC Model are implemented using the RBAC profile of XACML.
    Downloads: 1 This Week
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  • 21
    The goal of this project is to create an expandable secure content store along the lines described by JSR 283 supporting an access model, which incorporates both discretionary and mandatory access controls.
    Downloads: 1 This Week
    Last Update:
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  • 22
    dTools' JConsole is a tiny library to assist Java developers in creating command line software. Features of dTools' JConsole include adding custom commands, parse command lines, and logging abilities.
    Downloads: 1 This Week
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  • 23
    A 6502 emulator for the 21st century. Initial development will be in C, but may lead to a portable Java implementation with graphical display.
    Downloads: 1 This Week
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  • 24
    jGameAdmin is a Java based web application, targeting Linux and Windows systems. With jGameadmin, you can easily administrate your game servers, voice servers and customers over a single and intuitive web interface.
    Downloads: 1 This Week
    Last Update:
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  • 25
    a KDE front end to the 'mon' monitors.
    Downloads: 1 This Week
    Last Update:
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