Browse free open source System software and projects for Windows below. Use the toggles on the left to filter open source 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.
    Start Free
  • Try Google Cloud Risk-Free With $300 in Credit Icon
    Try Google Cloud Risk-Free With $300 in Credit

    No hidden charges. No surprise bills. Cancel anytime.

    Use your credit across every product. Compute, storage, AI, analytics. When it runs out, 20+ products stay free. You only pay when you choose to.
    Start Free
  • 1
    Rufus

    Rufus

    Utility to create bootable USB flash drives

    Rufus is a standalone app designed to format and create a bootable USB drive for a large variety of ISOs. The app is just over 1MB in size and is notably faster than similar competitor apps such as the Windows 7 USB utility, Universal USB Installer, and UNetbootin. Rufus can come in handy when you need to simply format a USB drive, install an OS on a machine that lacks a CD/DVD-ROM drive, or when you need to boot an operating system temporarily without intentions of actually installing the media. This can be immensely useful while you're on the go or just need access to an OS for a temporary, isolated reason. The app can even be used to flash firmware to BIOS or other destinations by just using DOS. Even though Rufus is a tiny utility in comparison to other USB creation tools that can be rather bulky in size, it contends easily with the competition and creates bootable USB drives in record time!
    Downloads: 1,169 This Week
    Last Update:
    See Project
  • 2
    BleachBit

    BleachBit

    deletes junk files to free disk space and improve privacy

    BleachBit frees disk space and maintains privacy. Cleans cache, Internet history, temporary files, logs, cookies, Firefox, Google Chrome, Flash, Windows, Linux, and more. Downloads are at www.bleachbit.org and source code is at GitHub.
    Leader badge
    Downloads: 1,941 This Week
    Last Update:
    See Project
  • 3
    FreeFileSync

    FreeFileSync

    Free data backup software to synchronize files and folders

    FreeFileSync is a free Open Source software that helps you synchronize files and synchronize folders for Windows, Linux and macOS. It is designed to save your time setting up and running data backups while having nice visual feedback along the way. _______________________________________________________________ DOWNLOAD LINKS (official homepage): https://freefilesync.org/
    Downloads: 51 This Week
    Last Update:
    See Project
  • 4
    Katalog

    Katalog

    Catalog and Search files from permanent or removable drives

    Katalog is a desktop application to manage catalogs of disks and files: - Create catalogs from different sources or devices, - Search files even when the devices are disconnected, and find duplicates or differences - Organize your Collection of catalogs, Storage devices, and Virtual storage devices and get Statistics, - Backup or Archive files between catalogs - Collection data is stored in csv files or an SQLite base - Available in multiple languages - OpenSource and cross-platform (Linux, Windows, macOS). First use / tips - Simply start with the Create screen. Create your first catalog and experiment! - All data/catalog files are stored in the Settings/Collection folder. Documentation/Wiki: https://stephanecouturier.github.io/Katalog/ Follow Katalog on Facebook: https://www.facebook.com/Katalog-107117844916308 Follow active development: https://github.com/users/StephaneCouturier/projects/7
    Leader badge
    Downloads: 210 This Week
    Last Update:
    See Project
  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
    Start Free
  • 5
    Tria Sistema Operatiu

    Tria Sistema Operatiu

    Helps you find, download & burn the best Operating System for any PC

    Tria O.S. detects hard & soft specs of the PC where you run it, you can load this info or specify it manually to let the program inform you what would be the best operating system for a specific PC, with the specified hardware, and then see the difference by adding RAM, a SSD hard drive, changing the graphics card ... etc. REQUIREMENTS: For Linux, you need GAMBAS 3.3 or later, so you will have to install the gambas3 package before installing. 90's EDITION needs 160 MB (192 MB on a virtual machine) of RAM and works with Windows 95 and Windows NT 4.0. BRONTOSAURUS EDITION needs DirectX 9.0c and .Net Framework 2.0 and runs on Windows 98, Windows 98 SE, Windows ME & Windows 2000. XP EDITION requires .Net Framework 4.0 or newer. Runs on Windows XP, Vista, Server 2003, 2003 R2, Home Server and Server 2008. STANDARD EDITION needs .Net Framework 4.8 or 4.8.1 and runs on Windows 7, Windows Server 2008 R2, and newer (any Windows released from 2009 until today).
    Downloads: 9 This Week
    Last Update:
    See Project
  • 6
    Unetbootinbitti

    Unetbootinbitti

    Tool for creating live usb-drives and downloading distros

    Tool for creating live usb-drives and downloading distros. This is an upgraded version of Unetbootin focusing on Bittix linux 9 and above and Linux Mint and Linux Mint debian. Has Distrowatch.com link etc.
    Downloads: 25 This Week
    Last Update:
    See Project
  • 7
    Wake On Lan

    Wake On Lan

    A powerful WOL, ping, shutdown, GUI application.

    ATTENTION!!! Wol is now hosted on our own servers at http://wol.aquilatech.com. Wake On LAN, WakeOnLAN, shutdown software for Windows. A powerful WOL, ping, shutdown, GUI application.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 8
    Game Launcher

    Game Launcher

    A Windows tray application that launches your games, quickly

    Game Launcher is a simple application that lives in your notification area/system tray. It maintains a list of games you choose to have on it, and allows you to launch those games from anywhere by right-clicking the icon, or pressing Windows+G on your keyboard. GL supports various methods of adding games, including: browsing for the shortcut, drag'n'drop, shell integration, and direct input of a Steam App ID. Support and bug requests for GL is handled by the GitHub project's issue tracker, so if you have any bugs, feature requests or other suggestions, please post them there!
    Downloads: 3 This Week
    Last Update:
    See Project
  • 9
    garysfm

    garysfm

    An advanced file manager with qss themes and iso and folder previews

    garysfm which stands for Gary's File Manager is a file manager with some advanced features. Those features include bulk renaming and folder image previews. I has rather advanced search functions, tab browsing with persistence between launches. It remembers your folder sorting and view options in icon view. It also remembers your active tabs between sessions. It has progress dialog while doing large operations like copying large files, and folders with many files. python version works on mac 11.0.1 or above and on Linux. The exe definitely works on Windows 11 and 10 amd and intel 64 bit systems. the exe is not for arm systems. Full theming engine with qss support for advanced theming in 1.2.4 To use themes other than the default download gsfmt.zip, and qss.zip and extract them to the directory where your garysfm is located. (version 1.2.3 and above for gsfmt and 1.2.4 and above for qss.) 1.2.9 has cloud syncing, bookmarks, tags, and collections, and cleaner
    Downloads: 2 This Week
    Last Update:
    See Project
  • Add Two Lines of Code. Get Full APM. Icon
    Add Two Lines of Code. Get Full APM.

    AppSignal installs in minutes and auto-configures dashboards, alerts, and error tracking.

    Works out of the box for Rails, Django, Express, Phoenix, and more. Monitoring exceptions and performance in no time.
    Start Free
  • 10
    CyBerFuN xBTiT
    CyBerFuN xBTiT by cybernet2u / I only install hacks and maintain them / all the credits for the core source goes to : http://www.btiteam.org new files here ->https://github.com/cybyd/cybyd
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    GTCop Professional Security Appliance aims to provide a powerful tool for satellite communications, with enhanced QoS and bandwidth controls. As derived from IPCop Firewall, it is a stable, secure, easy to configure and maintain GNU/Linux firewall box.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • Next
MongoDB Logo MongoDB