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

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  • 1
    NSIS: Nullsoft Scriptable Install System

    NSIS: Nullsoft Scriptable Install System

    Windows installer development tool

    NSIS (Nullsoft Scriptable Install System) is a professional open source system to create Windows installers. It is designed to be as small and flexible as possible and is therefore very suitable for internet distribution. Being a user's first experience with your product, a stable and reliable installer is an important component of succesful software. With NSIS you can create such installers that are capable of doing everything that is needed to setup your software. NSIS is script-based and allows you to create the logic to handle even the most complex installation tasks. Many plug-ins and scripts are already available: you can create web installers, communicate with Windows and other software components, install or update shared components and more.
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    Downloads: 46,299 This Week
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  • 2
    Clonezilla

    Clonezilla

    A partition and disk imaging/cloning program

    Clonezilla is a partition and disk imaging/cloning program similar to True Image®. It saves and restores only used blocks in hard drive. Two types of Clonezilla are available, Clonezilla live and Clonezilla SE (Server Edition).
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    Downloads: 39,980 This Week
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  • 3
    WinMerge

    WinMerge

    Windows visual diff and merge for files and directories

    WinMerge is a Windows tool for visual difference display and merging, for both files and directories. It is highly useful for determining what has changed between file versions, and then merging those changes. WinMerge has Unicode support, Flexible syntax coloring editor, Visual SourceSafe integration, and Windows Shell integration. Regexp filtering for filenames and lines. Side-by-side line difference and highlights differences inside lines. A file map shows the overall file differences in a location pane. The user interface is translated into several languages.
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    Downloads: 33,038 This Week
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  • 4
    Bulk Crap Uninstaller

    Bulk Crap Uninstaller

    Remove large amounts of unwanted applications quickly.

    Bulk Crap Uninstaller (in short BCUninstaller or BCU) is a free (as in speech and beer) bulk program uninstaller with advanced automation. It excels at removing large amounts of applications with minimal to no user input, while requiring next to no technical knowledge. It can detect most applications and games (even portable or not registered), clean up leftovers, force uninstall, automatically uninstall according to premade lists, and much more. Bulk Crap Uninstaller is licensed under Apache 2.0 open source license, and can be used in both private and commercial settings for free and with no obligations, as long as no conditions of the license are broken.
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    Downloads: 12,693 This Week
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  • 5

    AutoAP

    A script to find open Wi-Fi connections and the strongest signal

    AutoAP is a script that continuously scans for open Wi-Fi connections, tests them for validity, and connects to the strongest signal. If the connection is lost, the script scans again and finds the strongest valid signal again, and maintains a continuous connection to the internet in a mobile or portable environment. The script paremeters are highly configurable, including ability to configure secure connections. AutoAP is an add on to DD-WRT that allows routers to continuously scan for and connect to open (and predefined WEP) wireless networks. Ultimately the goal is to develop an easily deployable firmware that facilitates fast and easy mesh network creation. Typically, you would use this script on your router while in Repeater Mode, Client Mode, or Client-Bridged Mode.
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    Downloads: 15,305 This Week
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  • 6
    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)
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    Downloads: 12,123 This Week
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  • 7
    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.
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    Downloads: 11,179 This Week
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  • 8
    Webmin

    Webmin

    A web-based interface for system administration of UNIX

    A web-based system administration tool for Unix servers and services. https://github.com/webmin/webmin
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    Downloads: 8,165 This Week
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  • 9
    Double Commander
    Double Commander is a cross platform open source file manager with two panels side by side. It is inspired by Total Commander and features some new ideas.
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    Downloads: 8,331 This Week
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  • 10
    GrandPerspective

    GrandPerspective

    Graphically shows disk usage for Macs

    GrandPerspective is a utility application for macOS that graphically displays the disk usage of your file system. It can help you to manage your disk, as you can easily spot which files and folders take up the most space.
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    Downloads: 6,935 This Week
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  • 11
    Neko Void

    Neko Void

    an unofficial respin of Void Linux with a complete out-of-the-box xp

    🐱 What is Neko-Void? ///DISTRO THERIAN FRIENDLY!!! Neko-Void is an unofficial respin of Void Linux ( void based distro ) featuring a preconfigured with carefully selected software for a complete out-of-the-box experience. Designed for users who want Void Linux's stability and minimalism with modern desktop functionality. REMEMBER TO DOWNLOAD THE ISO FROM OUR WEBSITE (WE TAKE A LITTLE WHILE TO UPDATE THIS SOURCEFORGE REPOSITORY) WEB PAGE= https://www.neko-void-linux.online DistroWatch: https://distrowatch.com/table.php?distribution=nekovoid <3 Donate: https://linktr.ee/javiercplusx ISO's Archives/betas/experimentals= https://archive.org/details/Neko-Void Build-iso=https://github.com/Neko-Void-Linux/Neko-Void Core System - Void Linux base (rolling release) - MATE Desktop fully configured and optimized - tinyfetch minimalist system information tool - UEFI and Legacy BIOS support - Octoxbps (install apps without terminal)
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    Downloads: 6,923 This Week
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  • 12
    waircut

    waircut

    WPS wireless protocol audit software for Windows

    Wireless Air Cut is a WPS wireless, portable and free network audit software for Ms Windows. It is used to check the security of our wps wireless networks and to detect possible security breaches. You can check if the router has a generic and known wps pin set, if it is vulnerable to a brute-force attack or is vulnerable to a Pixie-Dust attack. You can see the Installation instructions on Wiki. ------- Wireless Air Cut es un software de auditoria del protocolo WPS en redes wireless, portable, libre y gratuito para Ms Windows. Sirve para comprobar la seguridad WPS de nuestras redes wireless y detectar posibles brechas de seguridad. Puede comprobar si el router tiene establecido un pin wps genérico y conocido, si es vulnerable a un ataque por fuerza bruta o si es vulnerable a un ataque Pixie-Dust. Ver Instrucciones de instalación en la wiki.
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    Downloads: 4,059 This Week
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  • 13
    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: 708 This Week
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  • 14
    A very high quality package of printer drivers for CUPS on Linux and other POSIX-compliant operating systems. This project also maintains an enhanced Print plug-in for GIMP 2.x from the same code base.
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    Downloads: 3,559 This Week
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  • 15
    Pandora Open

    Pandora Open

    Open Source Monitoring System for performance and availability.

    Pandora OPEN is a high-performance, 100% open-source monitoring ecosystem, born as the independent evolution of the Pandora FMS community branch after version 777. Licensed under GPLv2, it provides a modular and sovereign platform for supervising networks, servers, and applications without commercial dependencies. It features multi-platform agents, remote monitoring (SNMP, WMI, HTTP), GIS maps, and advanced visual dashboards. Entirely maintained by the community on GitHub, it ensures total transparency, technical flexibility, and absolute freedom for system administrators.
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    Downloads: 2,277 This Week
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  • 16
    TeleDrive

    TeleDrive

    Unlimited Telegram cloud drive across 5 platforms & 11 languages.

    TeleDrive is a 100% open-source virtual cloud filesystem that turns private Telegram storage channels into an unthrottled, unlimited personal cloud drive with zero monthly subscription fees. Connect directly to Telegram MTProto 2.0 datacenters with zero relay servers and zero cloud storage bills. Key Highlights: • Zero Monthly Rent: Unlimited file storage via private Telegram channels. • 5 Native Platforms: Builds for macOS (DMG), Windows (EXE/MSI), Linux (AppImage/DEB/RPM), Android (APK), and iOS (IPA). • 11 Languages: Full localization for EN, PT-BR, ES, HI, ZH-CN, ZH-TW, RU, FR, DE, JA, and ID. • Tauri 2.0 & Rust: Under 250MB RAM usage with sub-millisecond zero-copy binary IPC streaming. • Built-In Workstation: Continuous PDF viewer, interactive CSV data explorer, CodeMirror 6 code editor, and 4K media streaming. • Automated Backup: Rust folder crawler with SHA-256 diff snapshots. Official Site: https://www.teledrive.space | GNU GPLv3
    Downloads: 4,748 This Week
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  • 17
    Nikkho

    Nikkho

    Javier Gutiérrez Chamorro (Guti) Open source projects

    Javier Gutiérrez Chamorro (Guti) Open source projects Author's website: https://www.javiergutierrezchamorro.com
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    Downloads: 2,501 This Week
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  • 18
    Burn

    Burn

    Simple but advanced disc burning for macOS

    Create data discs with advanced data settings. Create video and audio discs, Burn will convert if needed. Create DVD-Video discs. Recreate discs. Burn doesn't reinvent the wheel, it uses many powerful open source Unix utilities and is also open source.
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    Downloads: 2,586 This Week
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  • 19
    PeaZip

    PeaZip

    Free Zip software and Rar extractor

    PeaZip is a free archiver tool. The application provides an unified, natively portable, cross-platform file manager and archive manager GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX. Create: 7Z, ARC, Brotl, BZip, GZip, PEA, TAR, WIM, XZ, ZPAQ, ZIP, Zstandard files and more Open and extract 200+ file types: ACE, CAB, DEB, ISO, RAR, ZIPX and more Features of PeaZip includes extract, create and convert multiple archives at once, create self-extracting archives (sfx), split files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hashes, export task definition as command line script.
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    Downloads: 1,810 This Week
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  • 20
    DropIt

    DropIt

    A flexible tool to automate processing & organizing files and folders.

    When you need to organize files, DropIt can eliminate much of the drudgery of searching and manually opening folders and moving files around. Drop a group of different files and folders on the floating DropIt image and it sorts them to defined destination folders, compresses or extracts them, opens them with associated programs or performs other defined actions. You can define how filter your files (by name, directory, size, date, properties, content or regular expressions) and associate one of the 21 available actions to perform (Move, Copy, Compress, Extract, Rename, Delete, Split, Join, Encrypt, Decrypt, Open With, Print, Upload, Send by Mail, Create Gallery, Create List, Create Playlist, Create Shortcut, Copy to Clipboard, Change Properties and Ignore). You can also organize your associations in profiles and automatically scan monitored folders at a defined time interval.
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    Downloads: 1,592 This Week
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  • 21
    deepin
    deepin is a Debian-based distribution that aims to provide an elegant, user-friendly and reliable operating system. It does not only include the best the open source world has to offer, but it has also created its own desktop environment called DDE or Deepin Desktop Environment which is based on the Qt 5 toolkit. Deepin focuses much of its attention on intuitive design. Its home-grown applications, like Deepin Software Centre, DMusic and DPlayer are tailored to the average user. Being easy to install and use, deepin can be a good Windows alternative for office and home use.
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    Downloads: 1,629 This Week
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  • 22
    Synex

    Synex

    A minimalist and reliable operating system built on top of Debian.

    Focus on what matters Solid foundation, simple experience: designed for businesses and users who want to work without distractions. Effortless Setup: Quick and easy installation process to get you up and running in no time. Streamlined Performance: Optimized for speed and efficiency, ensuring a smooth user experience. About Synex Synex is an innovative Linux distribution crafted in Argentina, built on the robust foundation of Debian. Our mission is to deliver a minimalist and stable operating system that caters to the needs of small and medium-sized businesses, as well as individual users seeking a straightforward computing experience. We prioritize simplicity without compromising on performance, ensuring that our users can focus on what truly matters. Key Features of Synex Focused: Designed with a clean and intuitive interface that enhances productivity. Stable: Built on top of Debian, providing a reliable and secure platform for all your needs.
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    Downloads: 2,076 This Week
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  • 23
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    Downloads: 1,623 This Week
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  • 24
    Super Grub2 Disk

    Super Grub2 Disk

    Boots into many systems and GRUB2 ones!

    Super GRUB2 Disk helps you to boot into most any Operating System (OS) even if you cannot boot into it by normal means.
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    Downloads: 1,938 This Week
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  • 25
    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: 954 This Week
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