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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.

  • 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.
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  • Manage and optimise Google, Facebook and Microsoft Ads faster and gain a competitive advantage with our digital advertising platform. Icon
    Manage and optimise Google, Facebook and Microsoft Ads faster and gain a competitive advantage with our digital advertising platform.

    Smarter, more effective advertising

    Slash the time it takes to manage and optimize your Google, Microsoft Advertising or Facebook Ads campaigns to just minutes a day. Adzooma's AI and machine learning based PPC platform offers stress free campaign management, state of the art 24/7 optimization and advanced automation, all in a simple to use interface. Scan for 50+ improvement 'opportunities', many of which can be actioned with a single click, track PPC performance and highlight over/under spending to improve your quality score, conversions and ROI. These trying times are tough for all. So we're giving away our whole award-winning platform for free until June 1st 2020. That's automated PPC ads, one-click optimisations, and world-class reporting - at zero cost. No strings attached. No credit card required.
    Free until June 1st 2020
  • 1
    HP Linux Imaging and Printing

    HP Linux Imaging and Printing

    Hewlett-Packard's Linux imaging and printing software

    The Hewlett-Packard Linux Imaging and Printing Project provides a unified single and multi-function connectivity solution for Linux. For support and help, please visit https://launchpad.net/hplip
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    Downloads: 8,291 This Week
    Last Update:
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  • 2
    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: 3,202 This Week
    Last Update:
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  • 3
    vDos

    vDos

    Run DOS applications in Windows.

    vDos is specific to run serious (mainly text mode) DOS applications in Windows 32 or 64-bit, Windows 7 or later. You need at least already use such a DOS application to appreciate vDos. If you don’t, want to play with DOS (or its games): vDos isn’t meant for you! Recent versions (latest 2025.05.01) and the vDos forum are now hosted at: https://www.vdos.info
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    Downloads: 127 This Week
    Last Update:
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  • 4

    JasperStarter

    Running JasperReports from command line

    JasperStarter is a command line launcher and batch compiler for JasperReports.
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    Downloads: 120 This Week
    Last Update:
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  • The Easy Way To Build A Referral Program Icon
    The Easy Way To Build A Referral Program

    Referral Factory is the #1 referral software used by SMEs and Marketers.

    Referral Factory offers over 1000 pre-built referral program templates you can use as your own, or you can build your own referral program from scratch. You get unlimited referral campaigns on all plans, and brilliant support from their team of referral marketing experts.
    Learn More
  • 5
    ESP3D

    ESP3D

    FW for ESP8266/ESP8285/ESP32 used with 3D printer

    This firmware allows not only to have a cheap bridge between Wifi and serial, but also to have a web UI to configure wifi, to monitor 3D printer and even control it, and to make things easy, UI is fully customizable without reflashing FW. Firmware should work with any 3D printer firmware (repetier/marlin/smoothie ware using GCODE) if the serial connection has a correct setup. I currently use it with my personal flavor of repetier for Due based boards. The web interface files are present in the data directory but UI has its own repository ESP3D-WEBUI. Use GPIO2 to the ground to reset all settings in a hard way, 2-6 sec after boot / not before!! Set GPIO2 to ground before boot change boot mode and go to special boot that do not reach FW. Currently, boot takes 10 sec - giving 8 seconds to connect GPIO2 to GND and do a hard recovery for settings. Complete configuration by web browser (Station or Access point) or by Serial/telnet commands.
    Downloads: 18 This Week
    Last Update:
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  • 6
    CUPS back-end for the canon printers using the proprietary USB over IP BJNP protocol. This back-end allows Cups to print over the network to a Canon printer. The design is based on reverse engineering of the protocol. Version 2.0 adds ink-level reporting and improved out-of-paper detection. Version 2.0.1 is now released under GPLv2 or later to be compatible with the changed cups license. No other changes. Version 2.0.2 fixes a compile error with GCC9 Version 2.0.3 Fix GCC10 compile errors. increase status buffer size for newer printers that send larger status messages
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    Downloads: 96 This Week
    Last Update:
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  • 7
    Those who have read past the "Malware" warning can be assured there is absolutely no malware in this OS or in the download. This warning comes from the "netcat" binary included in the download as a DOS time client. Unfortunately netcat has code that is flagged as malware. FREESCO, a NAT/firewall router/server based on Linux and runs on a single 1.44MB floppy. Freesco is very powerful and versatile and can connect multiple home or small office networks to most types of Internet connections including dialup.
    Downloads: 25 This Week
    Last Update:
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  • 8
    CID

    CID

    Insert and manage Linux computers in AD

    CID (Closed In Directory) is a set of bash scripts for inserting and managing Linux computers in Active Directory domains. Modifications made to the system allow Linux to behave like a Windows computer within AD.
    Downloads: 15 This Week
    Last Update:
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  • 9

    Raspi - Home Server

    Un piccolo server domestico con il Raspberry

    Immagine per il Raspberry PI che implementa un server domestico per i seguenti servizi: NAS (collegando dischi USB alle porte del Raspberry) Print Server Media Server (DLNA) Scanner di rete (Permette l'accesso via rete ad uno scanner) Inoltre è installata l'interfaccia web RPI-Monitor che consente di visualizzare via web lo stato del dispositivo. Tramite interfaccia web è possibile gestire: Amministrazione del dispositivo (tramite WEBMIN) Stampanti (Tramite CUPS) Scanner (Tramite PHP Server Scanner) Accesso in ssh (tramite shell in a box) Caratteristica interessante è il fatto che è un server headless (quindi puo' essere operativo senza alcun monitor e tastiera). Anche la parte Wifi (SSID e Password) sono configurabili con un fiile di testo presente nella partizione di boot (che è in FAT32 e quindi modificabile anche da S.O. Windows). Una volta collegato alla rete il dispositivo è visibile tramite il nome raspberrypi.local (o raspberrypi)
    Downloads: 50 This Week
    Last Update:
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  • Apify is a full-stack web scraping and automation platform helping anyone get value from the web. Icon
    Apify is a full-stack web scraping and automation platform helping anyone get value from the web.

    Get web data. Build automations.

    Actors are serverless cloud programs that extract data, automate web tasks, and run AI agents. Developers build them using JavaScript, Python, or Crawlee, Apify's open-source library. Build once, publish to Store, and earn when others use it. Thousands of developers do this - Apify handles infrastructure, billing, and monthly payouts.
    Learn More
  • 10
    A collection of enhanced PPD files for Canon Pixma MP600 and MP610 all-in-one printers, and a Sane scanner driver for Canon Pixma MP140, MP210, MP520, MP610, MP710, MX700 for up to 4800 dpi resolution, that can be used with Sane 1.0.18 or 1.0.19.
    Downloads: 7 This Week
    Last Update:
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  • 11
    The Hewlett-Packard Co. Linux Inkjet Driver Project has moved!
    Downloads: 9 This Week
    Last Update:
    See Project
  • 12
    Libinklevel is a library to check the ink level of ink jet printers connected via USB. Canon BJNP network printers are supported too. It works on Linux and FreeBSD.
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    Downloads: 24 This Week
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  • 13
    Ink is a command line tool which displays the ink level of your printer. It makes use of libinklevel.
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    Downloads: 19 This Week
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  • 14
    ELPS is a small linux distro aimed to became a dedicated network print server that fits in an 32MB flash disk.
    Downloads: 15 This Week
    Last Update:
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  • 15
    This project includes 4 main modules to use with CUPS : "KUPS", a KDE administration front-end, "XPP", a light graphical printing frontend, "QTCUPS", a front-end and library for Qt, and "CUPS-DRIVERS", GS drivers which allow to print to any printer.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 16
    Print spooler and associated software.
    Downloads: 4 This Week
    Last Update:
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  • 17
    EmfPrinter
    EmfPrinter is a virtual printer driver for Microsoft Windows which allows you to print documents as EMF/WMF vector images or to more than 100 raster formats (JPEG,PNG,BMP,etc). Document conversion has never been easier!
    Downloads: 4 This Week
    Last Update:
    See Project
  • 18
    A full-featured, GTK-based control panel for IceWM, featuring an IceWM theme designer, IceSoundManager (sound events), IcePref2, & tools to manage wallpaper, cursors, keys, window options, & more. IceWMCP has a familiar, Control Panel-like interface.
    Downloads: 1 This Week
    Last Update:
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  • 19

    JosePrintTool

    Monitorize number of pages printed by any printer on your network

    It will Monitor all printers connected to a windows system, even network ones shared with your computer from another pc on version 0.6 and up. It will save the number of pages printed for every printer and the number of printer jobs and show you the information when you wish.
    Downloads: 1 This Week
    Last Update:
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  • 20
    Allows stdin or files specified on the command line to be printed from a remote terminal using ANSI escape sequences. Inspired by the ansiprt.c component of U Wash's PINE.
    Downloads: 1 This Week
    Last Update:
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  • 21
    Linux support for Brother MFC 4600 and similar multifunction devices including printing, scanning, fax and remote control panel application.
    Downloads: 1 This Week
    Last Update:
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  • 22
    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: 1 This Week
    Last Update:
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  • 23
    GUI wrapper for escputil (command line utility to manage Epson printers): it allows to watch ink levels, clean print heads, print nozzle patterns, align printer heads, .... with a simple and friendly user interface.
    Downloads: 1 This Week
    Last Update:
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  • 24
    uniPress will be a press-review and press-publishing system whose target group univerities and their departments are. The main concept is based on the Bachelor Thesis of christoph, you could find here (german): http://ch-becker.de/extern/bsc/bsc.pdf
    Downloads: 1 This Week
    Last Update:
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  • 25
    GUI and scripts for the ACC300 serial check-printer and MySQL checks database management Interface de usuário e scripts para a impressora de cheques ACC300 ("Check-pronto") e para gerenciamento de um banco de dados MySQL de cheques emitidos
    Downloads: 0 This Week
    Last Update:
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