Open Source Java System Software - Page 9

Java System Software

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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.

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  • 1
    Codeboard

    Codeboard

    Codeboard App

    CodeBoard is an open‑source Android keyboard tailored for coding. It consolidates symbols, code navigation, editing shortcuts, and clipboard tools into one keyboard—eliminating constant layout switching between alphabets, numbers, and symbols.
    Downloads: 1 This Week
    Last Update:
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  • 2
    Coffee GB

    Coffee GB

    Gameboy emulator in Java 8

    Coffee GB is a Gameboy Color emulator written in Java 8. It's meant to be a development exercise. More info can be found in the blog post. First I implemented all the Gameboy CPU opcodes. It’s not exactly the Z80, but it’s pretty close. As a reference, I’ve used the GameBoy CPU Manual - later on I discovered that it has a few typos and is not specific enough for some of the operations. After implementing the opcodes and memory (modelled by an int[] array) I was eager to check whether it’s possible to run some code on it. I had neither the cartridge nor the GPU emulation yet, so even the simplest game wouldn’t be an option. However, when the original Gameboy starts, it executes a simple 256-bytes program, a kind of firmware displaying the Nintendo logo and self-testing the system. That was exactly the thing I was looking for - after just 3 days I had an application running the Gameboy code!
    Downloads: 1 This Week
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  • 3
    Datahike

    Datahike

    A durable Datalog implementation adaptable for distribution

    Datahike is a durable Datalog database powered by an efficient Datalog query engine. This project started as a port of DataScript to the hitchhiker-tree. All DataScript tests are passing, but we are still working on the internals. Having said this we consider Datahike usable for medium sized projects, since DataScript is very mature and deployed in many applications and the hitchhiker-tree implementation is heavily tested through generative testing. We are building on the two projects and the storage backends for the hitchhiker-tree through konserve. We would like to hear experience reports and are happy if you join us. We provide a small stable API for the JVM at the moment, but the on-disk schema is not fixed yet. We will provide a migration guide until we have reached a stable on-disk schema. Take a look at the ChangeLog before upgrading.
    Downloads: 1 This Week
    Last Update:
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  • 4
    ElAdmin

    ElAdmin

    Backend management system based on Spring Boot

    Eladmin is a modular, full-featured backend management system based on Spring Boot, Spring Security, JWT, and Vue.js. It provides a front-end and back-end separation architecture suitable for enterprise-level projects and includes functionality like user and role management, logging, code generation, and monitoring. Eladmin is designed for quick deployment of admin systems and offers a robust base for building custom applications with authentication, authorization, and responsive UI components.
    Downloads: 1 This Week
    Last Update:
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  • 5
    Fiery

    Fiery

    trace for PHP

    Fiery is an APM-Application Performance Management for the PHP.
    Downloads: 1 This Week
    Last Update:
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  • 6
    Micrometer

    Micrometer

    App observability facade for the most popular observability tools

    Micrometer provides a simple facade over the instrumentation clients for the most popular observability systems, allowing you to instrument your JVM-based application code without vendor lock-in. Think SLF4J, but for observability. Micrometer provides vendor-neutral interfaces for timers, gauges, counters, distribution summaries, and long task timers with a dimensional data model that, when paired with a dimensional monitoring system, allows for efficient access to a particular named metric with the ability to drill down across its dimensions. Out-of-the-box instrumentation of caches, the class loader, garbage collection, processor utilization, thread pools, and more tailored to actionable insight. Micrometer is the instrumentation library powering the delivery of application observability from Spring Boot applications.
    Downloads: 1 This Week
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  • 7
    OSHI

    OSHI

    Native Operating System and Hardware Information

    OSHI is a free JNA-based (native) Operating System and Hardware Information library for Java. It does not require the installation of any additional native libraries and aims to provide a cross-platform implementation to retrieve system information, such as OS version, processes, memory and CPU usage, disks and partitions, devices, sensors, etc.
    Downloads: 1 This Week
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  • 8
    ThingsBoard Message Queue (TBMQ)

    ThingsBoard Message Queue (TBMQ)

    Open-source, scalable, and fault-tolerant MQTT broker

    TBMQ is a lightweight message broker built to support ThingsBoard's IoT platform, focusing on telemetry data streaming and device communication. It uses Kafka-compatible APIs and is optimized for high-throughput messaging, device scalability, and low-latency delivery. TBMQ is ideal for IoT backends needing MQTT or Kafka-style pub/sub infrastructure.
    Downloads: 1 This Week
    Last Update:
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  • 9
    Tsunami

    Tsunami

    Network security scanner for detecting severity vulnerabilities

    Tsunami is a general purpose network security scanner with an extensible plugin system for detecting high severity vulnerabilities with high confidence. When security vulnerabilities or misconfigurations are actively exploited by attackers, organizations need to react quickly in order to protect potentially vulnerable assets. As attackers increasingly invest in automation, the time window to react to a newly released, high severity vulnerability is usually measured in hours. This poses a significant challenge for large organizations with thousands or even millions of internet-connected systems. In such hyperscale environments, security vulnerabilities must be detected and ideally remediated in a fully automated fashion. To do so, information security teams need to have the ability to implement and roll out detectors for novel security issues at scale in a very short amount of time. Furthermore, it is important that the detection quality is consistently very high.
    Downloads: 1 This Week
    Last Update:
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  • 10
    WireMock

    WireMock

    A tool for mocking HTTP services

    HTTP response stubbing, matchable on URL, header and body content patterns. Request verification, runs in unit tests, as a standalone process or as a WAR app. Configurable via a fluent Java API, JSON files and JSON over HTTP. Record/playback of stubs, fault injection, per-request conditional proxying, browser proxying for request inspection and replacement. Stateful behavior simulation and configurable response delays. Mock your APIs for fast, robust and comprehensive testing. WireMock is a simulator for HTTP-based APIs. Some might consider it a service virtualization tool or a mock server. It enables you to stay productive when an API you depend on doesn't exist or isn't complete. It supports testing of edge cases and failure modes that the real API won't reliably produce. And because it's fast it can reduce your build time from hours down to minutes.
    Downloads: 1 This Week
    Last Update:
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  • 11
    Zuul

    Zuul

    Gateway service providing dynamic routing, monitoring and more

    Zuul is an L7 application gateway that offers many capabilities, including dynamic routing, monitoring, security, resiliency and more. It is used in the backend of the Netflix streaming service as a front door for all requests from devices and web sites. Zuul is ideal for cases like this where API traffic volume and diversity can become overwhelming and cause production issues to arise suddenly and without warning. Zuul has a broad range of filters that enable it to perform multiple functions quickly and apply functionality to services like Netflix. These functions include security authentication, dynamic routing, stress testing, load shedding and more.
    Downloads: 1 This Week
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  • 12
    floci

    floci

    Light, fluffy, and always free, the AWS Local Emulator alternative

    Floci is a free, open-source local AWS emulator designed as a lightweight alternative for testing cloud applications without using a real AWS account. It is built around a simple Docker-based workflow where developers can start the emulator and point standard AWS tools at a local endpoint. The project emphasizes no accounts, no authentication gates, no paid feature tiers, and broad local service coverage. It supports many AWS-style services, including storage, queues, databases, identity, compute, streaming, deployment, and infrastructure-related APIs. Floci is useful for development teams that want faster feedback loops, cheaper local testing, and repeatable integration environments. It also includes compatibility testing, multi-account isolation, persistence modes, SDK integration, and migration guidance for teams coming from other local cloud emulators.
    Downloads: 1 This Week
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  • 13
    LocoNet over TCP
    Client-server based software that talks to Digitrax LocoNet. TCP server talks through a hardware interface (e.g. LocoBuffer) to LocoNet. (User interface) clients talk to that server.
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    Downloads: 26 This Week
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  • 14
    The goal of this project is to build a configuration manager in Java that works with xml files, an URL or a LDAP repository to read the configuration properties. MBean / JBoss support is now available.
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    Downloads: 26 This Week
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  • 15
    CyanogenMod 13

    CyanogenMod 13

    Android Marshmallow for MSM8930 Samsung Devices

    Pure CyanogenMod 13
    Downloads: 25 This Week
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  • 16
    CPU tuner
    CPU tuner for android. Saves battery by interfacing cpufreq and turning on/off services.
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    Downloads: 6 This Week
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  • 17
    A Java library that allow Java applications to receive file system events on Windows and Linux.
    Downloads: 6 This Week
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  • 18
    WiKID Two-Factor Authentication System

    WiKID Two-Factor Authentication System

    Two-factor authentication system

    The WiKID Strong Authentication System is a public-key based two-factor authentication system. It is a flexible, extensible, and secure alternative to tokens, certs and passwords. Application & API support exists for Java, ASP, PHP, Ruby, OpenVPN, TACACS+, etc. Read our eGuide on how to setup your network with two-factor authentication: http://www.wikidsystems.com/learn-more/two-factor-authentication-white-papers
    Downloads: 8 This Week
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  • 19
    Open HPI is an open source implementation of the SA Forum's Hardware Platform Interface (HPI). HPI provides an abstracted interface to managing computer hardware, typically for chassis and rack based servers. The new location for the project is https://github.com/open-hpi/openhpi
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    Downloads: 22 This Week
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  • 20
    The Neverhood Restoration
    Be warned this project was discontinued in 2013 and has not been updated in years.
    Downloads: 22 This Week
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  • 21
    DROID
    [2014-10-31] This project is obsolete, for latest version (6.1.3) see GitHub https://github.com/digital-preservation/droid (source) and http://www.nationalarchives.gov.uk/information-management/manage-information/preserving-digital-records/droid/ (binary) DROID (Digital Record Object Identification) is an automatic file format identification tool. It is the first in a planned series of tools developed by The National Archives under the umbrella of its PRONOM technical registry service. [2013-01-24] The binary download of the latest version of DROID has now been moved to The National Archives website: http://www.nationalarchives.gov.uk/information-management/projects-and-work/droid.htm The source code for the latest version of DROID remains available via Github: http://digital-preservation.github.com/droid/ [2012-09-07] DROID 6.1 has been released. New project hosting for the project can be found on GitHub: http://digital-preservation.github.com/droid/
    Downloads: 6 This Week
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  • 22
    Java SIP softphone
    Peers is a very simple softphone. It's a SIP User-Agent, written in java, it works on windows, linux and mac. It can be used with SIP servers like opensips or asterisk IPBX. It supports G711 codec (PCMU and PCMA) and telephone-events (DTMF).
    Downloads: 4 This Week
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  • 23
    BackSlash Linux

    BackSlash Linux

    Linux based operating system with OOBE - comprises of FOSS.

    BackSlash Linux will no longer receive updates. BackSlash Linux is going to discontinued as of Sept 15, 2021 for a good reason. There is an article on the main page of https://www.backslashlinux.com which will explain the reason of the discontinuation of the project and future plans. I thank you all for the love and support.
    Downloads: 12 This Week
    Last Update:
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  • 24
    Shasummer is a SHA hashsum utility in Java. It can calculate SHA1, SHA256 and SHA512 hashes of a file or of a directory (and its subdirectories) and verify the hashes later. Shasummer has a graphical and a command-line interface.
    Downloads: 12 This Week
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  • 25
    VNCed allows admins and teachers to monitor multiple workstations at the same time using VNC. There are a number of other VNC releated downloads available including MSI Creators/Installers for UltraVNC, Win32 version of RFBProxy and pyvnc2swf-py2exe
    Downloads: 6 This Week
    Last Update:
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