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

  • Outgrown Windows Task Scheduler? Icon
    Outgrown Windows Task Scheduler?

    Free diagnostic identifies where your workflow is breaking down—with instant analysis of your scheduling environment.

    Windows Task Scheduler wasn't built for complex, cross-platform automation. Get a free diagnostic that shows exactly where things are failing and provides remediation recommendations. Interactive HTML report delivered in minutes.
    Download Free Tool
  • 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.
    Try it Free
  • 1
    Bodhi Linux

    Bodhi Linux

    A minimalist, enlightened Linux distribution

    Bodhi is a minimalistic, enlightened, Linux desktop. Bodhi Linux is extremely lightweight and highly customizable. Bodhi is suitable for both Linux newcomers and experienced users. The Ubuntu LTS assures stability for years and the Bodhi Team is very open to all suggestions and requests from users and willing to help.
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    Downloads: 6,029 This Week
    Last Update:
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  • 2
    uGet - Download Manager
    uGet, the Best Download Manager for Linux. uGet is a lightweight yet powerful Open Source download manager for GNU/Linux developed with GTK+, which also comes packaged as a portable Windows app. - Quick Links - Features: https://ugetdm.com/features Screenshots: https://ugetdm.com/screenshots Blog: https://ugetdm.com/blog Support: https://ugetdm.com/qa Frequently Asked Questions (FAQs): https://ugetdm.com/qa/faq RSS Feed: https://ugetdm.com/rss GitHub: https://github.com/ugetdm
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    Downloads: 760 This Week
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  • 3
    Mabox Linux

    Mabox Linux

    Lightweight ready to use OpenBox Desktop Rolling-release Manjaro based

    Mabox is a Manjaro based, desktop Linux distribution. The project ships with Openbox as the default desktop with pinch of customistations and home-brewed tools, like improved menu, side-panels and Mabox Control Center. Works great even on weaker computers.
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    Downloads: 710 This Week
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  • 4
    Cntlm is an NTLM / NTLMv2 authenticating HTTP/1.1 proxy. It caches auth'd connections for reuse, offers TCP/IP tunneling (port forwarding) thru parent proxy and much much more. It's in C, very fast and resource-efficient. Go to http://cntlm.sf.net/
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    Downloads: 527 This Week
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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
    Ultimate Edition

    Ultimate Edition

    An Ubuntu remix for both new and experienced Linux sophisticates

    Ultimate Edition Linux, previously "Ubuntu Ultimate Edition". We cater to a large base of *nix users including, but certainly not limited to gamers & low resource computers. We have a Ultimate Edition for virtually any user.
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    Downloads: 323 This Week
    Last Update:
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  • 6
    KShutdown

    KShutdown

    A graphical shutdown utility for Linux and Windows

    KShutdown is a graphical shutdown utility for Linux and Windows. It allows you to turn off or suspend a computer at a specified time. It features various time and delay options, command-line support, and notifications.
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    Downloads: 138 This Week
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  • 7
    Tools and plugins related to bart's PEBuilder
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    Downloads: 147 This Week
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  • 8
    searchmonkey

    searchmonkey

    Powerful desktop search app for Windows, Linux and Mac

    Power searching on your desktop without the pain. Perform powerful desktop searches without having to index your system using regular expressions. Graphical equivalent to find/grep. Available for Windows (JAVA) and Linux (Gnome & KDE) and easy to translate into your locale.
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    Downloads: 79 This Week
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  • 9
    Use Wine (Wine Is Not an Emulator) to run Windows applications on Darwin and Mac OS X.
    Downloads: 31 This Week
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  • Award-Winning Medical Office Software Designed for Your Specialty Icon
    Award-Winning Medical Office Software Designed for Your Specialty

    Succeed and scale your practice with cloud-based, data-backed, AI-powered healthcare software.

    RXNT is an ambulatory healthcare technology pioneer that empowers medical practices and healthcare organizations to succeed and scale through innovative, data-backed, AI-powered software.
    Learn More
  • 10
    Turbo Download Manager

    Turbo Download Manager

    A portable modern multi-threading download manager for all platforms

    A modern multi thread download manager for Windows, Linux, Mac OS, Firefox, Chrome, Opera and Android devices. For bug reports visit: https://github.com/inbasic/turbo-download-manager/issues For FAQs visit: http://add0n.com/turbo-download-manager.html Turbo Download Manager is an stand-alone application without any dependencies. It should run out of the box. Just set the download location while adding the first job request. If you have a browser and would like to integrate this download, use these browser extensions: Firefox: https://addons.mozilla.org/firefox/addon/turbo-download-manager/ Opera: https://addons.opera.com/extensions/details/turbo-download-manager/ Chrome: https://chrome.google.com/webstore/detail/turbo-download-manager/kemfccojgjoilhfmcblgimbggikekjip
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    Downloads: 66 This Week
    Last Update:
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  • 11
    antergos

    antergos

    A modern, elegant and powerful operating system based on Arch Linux.

    The purpose of Antergos is to provide a modern, elegant and powerful operating system based on one of the best Linux distributions out there, Arch Linux. Antergos is easy to use and very customizable It is open source, free and based on the fast and lightweight Arch Linux. Antergos uses the official Arch Linux package repositories and the AUR (user-submitted packages) along with its own software repositories. As with other GNU/Linux systems, Antergos is virtually free of viruses and spyware
    Downloads: 37 This Week
    Last Update:
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  • 12
    Rofi

    Rofi

    A window switcher, application launcher and dmenu replacement

    Rofi started as a clone of the simple switcher, written by Sean Pringle - a popup window switcher roughly based on a super switcher. Simpleswitcher laid the foundations, and therefore Sean Pringle deserves most of the credit for this tool. Rofi (renamed, as it lost the simple property) has been extended with extra features, like an application launcher and ssh-launcher, and can act as a drop-in menu replacement, making it a very versatile tool. Rofi, like dmenu, will provide the user with a textual list of options where one or more can be selected. This can either be running an application, selecting a window, or options provided by an external script. It's not an application that can support every possible use case. It tries to be generic enough to be usable by everybody. Rofi has several built-in modes implementing common use cases and can be extended by scripts (either called from Rofi or calling Rofi) or plugins.
    Downloads: 5 This Week
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  • 13
    Full Mouse Auto Clicker - AFK, Gaming...

    Full Mouse Auto Clicker - AFK, Gaming...

    smooth, reliable, and customizable clicking experience

    # ⚙️ Full Mouse Auto Clicker - AFK, Poductivity, Gaming (Minecraft and others) This autoclicker is a versatile tool designed to make your digital life easier, offering a smooth, reliable, and customizable clicking experience. ===================================================================================== Features • Customizable Click Locations: Choose whether to follow your cursor or click at a fixed, pre-defined spot on your screen. • Adjustable Click Frequency: Set the exact number of clicks or opt for an unlimited clicking mode to keep it running as long as you need. • Button Selection: Switch between left, right, or middle mouse button clicks depending on your needs. • Click Patterns: Select single, double, or triple-clicking to suit various tasks and applications. • Hotkey Configuration: Easily set and change hotkeys to start or stop the autoclicker without interrupting your workflow. • Background Operation: The autoclicker runs seamlessly in the background,
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    Downloads: 104 This Week
    Last Update:
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  • 14
    Parcellite is a lightweight GTK+ clipboard manager. This is a stripped down, basic-features-only clipboard manager with a small memory footprint for those who like simplicity.
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    Downloads: 26 This Week
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  • 15
    BGINFO4X - BGINFO for X and for Windows!

    BGINFO4X - BGINFO for X and for Windows!

    Shows desktop information on your screen

    BGINFO for X, also called BGINFO4X, is a clone of the popular program BGINFO for Microsoft Windows created by Sysinternals. BGINFO4X is designed for pretty print useful information (CPU model, Hostname, IP address, OS version, Office version, and much more ...) on your desktop background or wallpaper. See the screenshots to see BGINFO4X in action. BGINFO4X is Multi Platform (Windows, MacOSX, Linux, BSD). BGINFO4X is Highly Customizable. BGINFO4X is Open Source. BGINFO4X comes with lots of Features. See the main Features below on this page. Find more information in http://sourceforge.net/p/bginfo4x/wiki/BGINFO4X/
    Downloads: 32 This Week
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  • 16
    Pinguy OS
    Pinguy OS an out-of-the-box working operating system for everyone, not just geeks.
    Downloads: 55 This Week
    Last Update:
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  • 17
    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: 10 This Week
    Last Update:
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  • 18
    Key Scripter listens to key press/release events from a keyboard or a mouse and allows to simulate key press/release and mouse events. Supports gaming keypads, such as Nostromo SpeedPad. Allows the creation of powerful key scripts for games and other applications.
    Downloads: 27 This Week
    Last Update:
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  • 19
    snakeware

    snakeware

    A free Linux distro with a Python-based userspace

    snakeware is a free Linux distro with a Python userspace inspired by the Commodore 64. You are booted directly into a Python interpreter, which you can use to do whatever you want with your computer.
    Downloads: 1 This Week
    Last Update:
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  • 20
    Freeloader Linux

    Freeloader Linux

    Freeloader Linux is a live bootable distro

    Freeloader is a live Linux distribution to reclaim your PC and privacy. No hard disk required (boot from DVD/USB)
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    Downloads: 24 This Week
    Last Update:
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  • 21
    andLinux is a complete Ubuntu Linux system running seamlessly in Windows 2000 based systems (2000, XP, 2003, Vista, 7; 32-bit versions only). It is not just for development and runs almost all Linux applications without modification.
    Downloads: 9 This Week
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  • 22
    Gobudgie

    Gobudgie

    Gobudgie is an operating system which is compatible to Android.

    Gobudgie is using the powerfull Budgie desktop combined with the Ubuntu base. The user interface is designed for Android users so we're using a material theme. Gobudgie offers several ways to easily access or install applications. We integrated the Chromium OS Web Store the standard Ubuntu Software Center, an Android App runtime, PlayOnLinux and Wine.
    Downloads: 9 This Week
    Last Update:
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  • 23
    MIUI Monet Project

    MIUI Monet Project

    Material You Wallpaper-based Dynamic Themed Apps for MIUI

    ● Wallpaper based Material You monet theming for MIUI ● Default & Themed Settings icon versions included ● Tested and working with MIUI 13 Global & CN ROM
    Downloads: 14 This Week
    Last Update:
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  • 24
    Wcd is another Norton Change Directory (NCD) clone. Wcd is a command-line program to change directory fast. It includes a full screen interactive directory tree browser with speed search and a fast way to choose between multiple matches.
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    Downloads: 7 This Week
    Last Update:
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  • 25
    Pearl DDE

    Pearl DDE

    Beautiful Deepin Desktop Environment on Pearl Linux

    This special edition release is a twist from Pearl's familiar OS X styled desktop. This custom tweaked version of DDE is safe, beautiful and includes ability to install extra software from either Pearl's Software Manager or Deepin's App Store. Synaptic is also included. Most distros that release a DDE version have issues with multi monitor setup ..We solved that by adding ARANDR.
    Downloads: 12 This Week
    Last Update:
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