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

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
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  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
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  • 1
    Xiaomi.eu Multilang MIUI ROMs

    Xiaomi.eu Multilang MIUI ROMs

    OFFICIAL mirror of MIUI Multilang ROM by https://xiaomi.eu/

    Included languages: English (en.miui.com, xiaomi.eu) Chinese (miui.com) Polish (Acid, miuipolska.pl) Slovak (ingbrzy, https://miuios.cz) Czech (VMach, https://miuios.cz) Bulgarian (Global) Hungarian (vagyula, miui.hu) French (Global) Swedish (Global) Russian (Global) Ukrainian (Global) Belorussian (Global) Croatian (Masva, MIUI Adria) Vietnamese (Belmont-Gabriel) Italian (miui.it) Greek (Global) Norwegian (Global) Dutch (cueie, mannyribo, redmaner) Spanish (nosijf982) Turkish (suatsari) Brazilian-Portuguese (Global, Feurrado, Lobianco) Portuguese (KcNirvana, Lippe35) Hebrew (Global) Romanian (ashtefan) German (muhamed89, cp82, dahool2016, and more) Catalan (deivids84) Korean (cjhyuky, bradly1, xiaomiqm) Slovenian (bostjan2016) Serbian (dudjaa) Thai (Global) Finnish (dogiex) Arabic (Global) Japanese (ScratchBuild) Burmese (Global) Danish (Global)
    Leader badge
    Downloads: 24,773 This Week
    Last Update:
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  • 2
    Arrow OS

    Arrow OS

    It is an AOSP based project with an aim of keeping things clean!

    ArrowOS is an AOSP based open source project started with the aim of keeping things simple, clean and neat, both for the Android system and users. We understand the pain of unnecessary and sometimes rarely used mods/features being shipped with custom roms nowadays which may end up causing battery drains and/or memory leaks. This is being strictly avoided on our side keeping everything to a bare minimum, delivering the stable performance all the time without destroying the AOSP interface. With users getting more used to tweaks and features, we added just the right stuff that will be actually USEFUL at the end of the day.
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    Downloads: 827 This Week
    Last Update:
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  • 3
    LinuxonAndroid

    LinuxonAndroid

    A range of linux distros for your Android device

    This projects aim is to bring a range of linux distros to your android device through a method known as 'chroot', see it has running a linux distro within a virtual machine on your phone. You can access this virtual machine and run it on your phone without causing any damage to your device, or having to overwrite anything. Why might you want this? well my apps are designed to make the install and set up process as easy as possible (more so in the paid apps) while still giving you some flexibility. Once you have the distro up and running then you can pretty much run and install any linux software you like (so long as there is a arm port or it is not architecturaly dependent).
    Leader badge
    Downloads: 197 This Week
    Last Update:
    See Project
  • 4
    Leader badge
    Downloads: 150 This Week
    Last Update:
    See Project
  • 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.
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  • 5
    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: 10 This Week
    Last Update:
    See Project
  • 6
    The Fresh Project

    The Fresh Project

    Simply Awesome.

    The official home of Fresh, a One UI-based custom firmware for Samsung devices.
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    Downloads: 222 This Week
    Last Update:
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  • 7
    Mobilinux - Linux for Android

    Mobilinux - Linux for Android

    This application will allow you to install and run Linux on Android !

    The app supports ROOTED as well as NOROOTED devices. Use your mobile as a Pocket PC !! For Root Method: The application creates a disk image on a flash card, mounts it and installs an OS distribution. Applications of the new system are run in a chroot environment and working together with the Android platform. All changes made on the device are reversible, i.e. the application and components can be removed completely. Installation of a distribution is done by downloading files from official mirrors online over the internet. The application requires superuser rights (ROOT).Installing a new operating system takes about 15 minutes. The recommended minimum size of a disk image is 1024 MB (with LXDE), and without a GUI - 512 MB. Noroot Method: Install MOBICONSOLE addon and then install the linux on a non-rooted phone.
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    Downloads: 117 This Week
    Last Update:
    See Project
  • 8
    Life

    Life

    Linux for Education based on Ubuntu MATE

    Li-f-e: Linux for Education. A free Linux distribution for education.
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    Downloads: 45 This Week
    Last Update:
    See Project
  • 9
    JNode is a Java New Operating system Design Effort. JNode is a simple to use and install Java operating system for personal use on modern devices. Any java application runs on it, fast and safe. See our homepage for additional information.
    Downloads: 11 This Week
    Last Update:
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  • Secure User Management, Made Simple | Frontegg Icon
    Secure User Management, Made Simple | Frontegg

    Get 7,500 MAUs, 50 tenants, and 5 SSOs free – integrated into your app with just a few lines of code.

    Frontegg powers modern businesses with a user management platform that’s fast to deploy and built to scale. Embed SSO, multi-tenancy, and a customer-facing admin portal using robust SDKs and APIs – no complex setup required. Designed for the Product-Led Growth era, it simplifies setup, secures your users, and frees your team to innovate. From startups to enterprises, Frontegg delivers enterprise-grade tools at zero cost to start. Kick off today.
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  • 10
    CyanogenMod 13

    CyanogenMod 13

    Android Marshmallow for MSM8930 Samsung Devices

    Pure CyanogenMod 13
    Downloads: 34 This Week
    Last Update:
    See Project
  • 11
    NamelessROM

    NamelessROM

    Custom ROM for Android

    NamelessRom is opportunity; an opportunity to have a voice to the development team of the after-market firmware that you run on your device. The main goal of NamelessRom is to provide quality development for android devices, phones, and tablets alike. NamelessRom developers are available nearly 24/7 and respond to bug reports and feature requests almost instantly. This availability will allow you, the end-user, to have direct input into exactly what features and functions are included on the firmware that YOU run. NamelessRom == endless possibilities. Unless you have an iPhone, then you're out of luck. Get more information and find support on our forums at https://nameless-rom.org
    Downloads: 20 This Week
    Last Update:
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  • 12
    SLAX based LiveCD showcasing Sun Microsystem's open source project "Project Looking Glass 3D" (LG3D). Presented in 2004 LG3D combines a stunning 3D UI with the benefits of Java (easily expandable and reusable code, platform independency, etc.).
    Downloads: 6 This Week
    Last Update:
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  • 13
    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: 9 This Week
    Last Update:
    See Project
  • 14
    android4desktop

    android4desktop

    Android for Desktop

    Its Android for Desktops. 100% free. Live + Installable ISO image Current version - Android 4.4.4 Click - https://sourceforge.net/projects/android422x86/ for a android jellybean version with UEFI support
    Downloads: 7 This Week
    Last Update:
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  • 15
    DCMLinux - Dicom Linux Distribution

    DCMLinux - Dicom Linux Distribution

    Dicom PACS solution for free.

    DCMLinux is a complete PACS system, free of charge. Its core is an Ubuntu 14.04 system fully updated and it contains the DCM4CHEE as its PACS server. In the near future it will contain many other addons such as Weasis, Oviyam, Care2x, etc. Just download the iso, burn it to a CD and boot it up. No need to configure any files of dcm4chee, DCMLinux installer asks for everything it needs to configure a running PACS in minutes. Project Wiki : http://wiki.dcmlinux.org Project Forums: http://forums.dcmlinux.org
    Downloads: 3 This Week
    Last Update:
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  • 16
    PACS VM

    PACS VM

    ISO - Customized version of dcm4chee 2.17.3 for MySQL.

    1. Add JBoss Application Server 4.2.3.GA for JDK 6. 2. Cleanup for Windows and deprecated files. 3. Off CONSOLE records - http://forums.dcm4che.org/jiveforums/thread.jspa?messageID=4787
    Downloads: 4 This Week
    Last Update:
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  • 17
    Pardus Topluluk Sürümü

    Pardus Topluluk Sürümü

    Pardus Topluluk Sürümü - Pardus Community Edition

    Pardus Topluluk Sürümü Nedir? Pardus Topluluk Sürümü, TÜBİTAK/ULAKBİM’den bağımsız olarak geliştirilen bir GNU/Linux dağıtımıdır. TÜBİTAK/ULAKBİM’den isim hakkı için izin alınmıştır. Topluluk sürümü ile herkese hitap eden, kolay kurulan, çok dilli ve kendine özgü araçlara sahip bir dağıtım yapılması hedeflenmektedir. Çalışmalarda Debian GNU/Linux alt yapısı kullanılmaktadır. What is Pardus Community Edition? Pardus Community Edition, is a GNU/Linux distribution which is being distributed independent from TÜBİTAK/ULAKBİM. Permissions to use the “Pardus” name have been obtained from TÜBİTAK/ULAKBİM.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 18
    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: 1 This Week
    Last Update:
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  • 19
    Citrus-CAF

    Citrus-CAF

    Android Custom ROM based on CAF source

    Downloads: 3 This Week
    Last Update:
    See Project
  • 20
    Downloads: 2 This Week
    Last Update:
    See Project
  • 21
    Downloads: 2 This Week
    Last Update:
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  • 22

    Partylog2

    Partylog2 is a Graylog2 appliance based in Turnkey Linux 12

    Partylog2 is a Graylog2 appliance ready to install or boot in LiveCD mode. Its based in TurnKey Linux (TurnKey Core 12) which is based in Debian 6.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    Anthon

    Anthon

    Anthon is a Chinese x86_64 based Linux distribution based on openSuSE

    Anthon is a Chinese-created x86_64 based Linux distribution based on openSuSE created by "Anthon.Dev", a small development team of three junior school students. The distro is made for home users, with a nicely-designed interface based on GNOME 3. Aimed to make it easy and fast to use. Contact Us: Developers: anthon.developers@gmail.com Help: anthon.ifuneedicanhelp@gmail.com
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    AOSB Project
    Sources: https://github.com/AOSB/ Changelogs: http://probam.net/changelog/ Download: http://probam.net/android-kikat-/
    Downloads: 0 This Week
    Last Update:
    See Project
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