Browse free open source System software and projects for Windows and Desktop Operating Systems 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
    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: 6,545 This Week
    Last Update:
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  • 2
    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: 1,488 This Week
    Last Update:
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  • 3
    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: 843 This Week
    Last Update:
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  • 4
    CLISP - an ANSI Common Lisp
    CLISP is a portable ANSI Common Lisp implementation and development environment by Bruno Haible. Interpreter, compiler, debugger, CLOS, MOP, FFI, Unicode, sockets, CLX. UI in English, German, French, Spanish, Dutch, Russian, and Danish.
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    Downloads: 259 This Week
    Last Update:
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  • 5
    EJBCA, JEE PKI Certificate Authority
    EJBCA is an enterprise class PKI Certificate Authority built on JEE technology. It is a robust, high performance, platform independent, flexible, and component based CA to be used standalone or integrated in other JEE applications.
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    Downloads: 172 This Week
    Last Update:
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  • 6
    Robolinux

    Robolinux

    Announcing Robolinux Cinnamon 14.1

    Announcing The New Robolinux Series 14 Mate LTS - 2034 Robolinux is very pleased to announce a completely new 14.1 Mate privacy centered 1inux operating system you can download freely while also offering our users an optional 14+ advanced upgrade which comes with our Untracker and FAAST Boot along with one click popular privacy software installers like Tor and I2p, Wireshark and Bleachbit plus many more for a fair and reasonable price. Robolinux14.1-Mate is ideal for beginners and advanced users. We are proud that it comes with Enoch AI which is TOTALLY 100% PRIVATE, FREE, HONEST & UNCENSORED built into Robolinux Cinnamon 14.1 The Robolinux 14.1 version with rock solid Long Term Support through 2034! requires users to set secure boot in their BIOS. It is currently available in the Cinnamon desktop flavor. we will release series 14 Xfce version in the next two months.For more information please see Readme file. Warmest regards John Martinson Robolinux.org
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    Downloads: 97 This Week
    Last Update:
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  • 7
    luckyBackup

    luckyBackup

    ...a powerful, fast and reliable backup & sync tool.

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ windows users, note that luckybackup is originally developed for linux and the windows port (version) is under heavy development at the moment. Feedback is more than welcome and will be appreciated, but please consider the above before you provide a negative review. windows dedicated forum: https://sourceforge.net/p/luckybackup/discussion/2264489/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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    Downloads: 64 This Week
    Last Update:
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  • 8
    Bacula
    Bacula is a set of computer programs that permit managing backup, recovery, and verification of computer data across a network of computers of different kinds. Based on Source Forge downloads, Bacula is the most popular Open Source backup program.
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    Downloads: 205 This Week
    Last Update:
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  • 9

    N2NCopy

    Copy, or move, n files and/or nfolders into n destination folders

    With this little windows program, you will be able to copy, or move, multiple files and folders to multiple destinations in only one step.
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    Downloads: 36 This Week
    Last Update:
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  • 10
    Ping for life is a complete solution for network administrators and for people who must know the connection status through ICMP. It's the simpliest and most powerful ping graphical tool.
    Downloads: 40 This Week
    Last Update:
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  • 11
    Apple Disk Transfer ProDOS

    Apple Disk Transfer ProDOS

    Transfer disks and disk images between the Apple II and the real world

    Apple Disk Transfer ProDOS (ADTPro) transfers classic 8-bit Apple disk images over a serial, ethernet or audio link to a more modern computer. Based on the seminal ADT, ADTPro can transfer any ProDOS- or SOS-visible volume.
    Downloads: 21 This Week
    Last Update:
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  • 12
    DreamStudio by Volocian Studios
    Volocian believes first and foremost that financial status shouldn’t be a barrier to entry in multimedia content creation. Whether you want to design a product or website, record a band, remix a song, or produce a feature length movie with professional post production graphics and effects, Volocian™ wants to help, even if you’re using borrowed hardware with no previous experience. We provide affordable products and services for any budget, including cost-free solutions for education and demo purposes, while everything we do is designed with ease of use and flexibility in mind, to suit everyone from novice hobbyists to expert professionals. Wherever possible, Volocian™ relies on free, open source, and cross-platform software to prevent vendor lock-in, planned obsolescence, and software as a service licensing. While we remain pragmatic about the use of proprietary software, as we’re aware of the feature limitations of some open source solutions, free solutions are preferred.
    Downloads: 10 This Week
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  • 13
    PeaExtractor

    PeaExtractor

    Simple 7z, ace, cab, iso, rar, tar, zip file extractor

    User friendly wizard-based program for extraction of 180+ archive types, including encrypted files (7Z, ARC, PEA, RAR, ZIP, ZIPX) and spanned multi-volume archives (001, R01, Z01), spin-off of PeaZip project. Drag & drop any file on the application to extract it (if supported) or to attempt unpacking of unknown formats and variants. The minimal GUI is meant to keep working with archive decompression as simple as possible. It is primarily targeted to users with no prior experience in handling archive files, or not needing advanced archive management features such as in-archive browsing and search, creation and conversion of archives, etc.
    Downloads: 26 This Week
    Last Update:
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  • 14
    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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  • 15
    A complete OpenSource Network Management System Is SNMP-Standard Oriented (tested on Cisco and Linux). It Integrates Syslog, Tacacs, RRDtool (Performance Graphs), Maps, Traps, TFTP, Autodiscovery, Sound Alerts, AAA, Modular and Extensible.
    Downloads: 4 This Week
    Last Update:
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  • 16
    di

    di

    advanced disk information utility

    'di' is a disk information utility, displaying everything (and more) that your 'df' command does. It features the ability to display your disk usage in whatever format you prefer. 'di' also checks the user and group quotas, so that the user sees the space available for their use, not the system wide disk space. 'di' is designed to be portable across many platforms and is great for heterogenous networks.
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    Downloads: 11 This Week
    Last Update:
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  • 17
    Lan Core is a free & open source software that lets you to build a thin client network on a Windows operating system. It was originally designed to work in a server or workstation with Windows XP Professional using the native remote desktop protocol.
    Downloads: 6 This Week
    Last Update:
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  • 18
    Pythońol is an all-in-one program to help English speakers learn Spanish. Features include: Pronunciation, verb conjugation, dictionary (70,000+ words), thesaurus, quizzes, full-text translation, idioms, a verb browser, and a large reference section.
    Downloads: 8 This Week
    Last Update:
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  • 19
    LinPHA is an easy to use, multilingual, flexible photo/image archive/album/gallery written in PHP. It uses a SQL database to store information about your pictures. It comes with a HTML based installer, so you don't need experience in setting up SQL
    Downloads: 1 This Week
    Last Update:
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  • 20
    Babel Enterprise
    Babel is a enterprise grade secure monitoring platfform to check OS security status: user/passwords, kernel options, file perms, patches, network setup, SUID, binary files changes and much more. All in a distributed and modular management architecture.
    Downloads: 2 This Week
    Last Update:
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  • 21
    GeoShell is a Windows Shell Replacement. It replaces the standard 'Start Menu', 'Desktop', 'Task Bar' and 'system tray' of windows with a smaller, faster, and more configureable program, with an extensible bar-oriented minimal interface.
    Downloads: 2 This Week
    Last Update:
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  • 22
    This project has been moved to Pandora FMS project (since 2005). New site is at http://pandorafms.org
    Downloads: 2 This Week
    Last Update:
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  • 23

    DuplicadosEraser2

    Search, find and manage duplicate files and folders with this program

    It compares files and folders, even inside compressed archives. When done, you can send the duplicate files or folders to the recycle bin, another folder or erase them, or save the list to work later.
    Downloads: 1 This Week
    Last Update:
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  • 24
    Zeromus Browser

    Zeromus Browser

    Zeromus Browser is free, simple and lightweight.

    Zeromus Browser is a simple browser whose feature list includes things like "History", "Bookmarks" and "zLink", that is a page to see the most visited hosts. It is small, less then 10,000 lines of code and very fast. The SpringSun 2.0.0 update includes a new homepage, a new zLink page, new keyboard shortcuts, a new button to the download manager, a streamlined interface, and a major modification of the search engines. The SpringSun 2.1.0 update use Qt 4.8.3 for more stability. The 4.2 update include a better interface, a new logo, and a new homepage. Then, the 4.3 update include an other new logo because we search what's Zeromus identity. ;-) Note: Zeromus Browser is a fork of Arora.
    Downloads: 1 This Week
    Last Update:
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  • 25
    DVD/CD UDF disc drive tools, esp. for the Iomega RRD (aka Iomega REV) drive. Usability patches for UDF mkfs and fsck. Commentary for the lk MMC and UDF source code. cvs co tarballs for firewalls that defeat CVS. Links, FAQ's, troubleshooting hints.
    Downloads: 0 This Week
    Last Update:
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