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.

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  • 1
    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: 3,112 This Week
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  • 2
    VeraCrypt

    VeraCrypt

    Open source disk encryption with strong security for the Paranoid

    VeraCrypt is a free disk encryption software brought to you by IDRIX (https://www.idrix.fr) and based on TrueCrypt 7.1a. It adds enhanced security to the algorithms used for system and partitions encryption making it immune to new developments in brute-force attacks. It also solves many vulnerabilities and security issues found in TrueCrypt. This enhanced security adds some delay ONLY to the opening of encrypted partitions without any performance impact to the application use phase. This is acceptable to the legitimate owner but it makes it much harder for an attacker to gain access to the encrypted data. All released files are PGP signed with key ID=0x680D16DE, available on key servers and downloadable at https://www.idrix.fr/VeraCrypt/VeraCrypt_PGP_public_key.asc VeraCrypt can mount TrueCrypt volumes. It also can convert them to VeraCrypt format. Documentation: https://www.veracrypt.fr/en/Documentation.html FAQ : https://www.veracrypt.fr/en/FAQ.html
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    Downloads: 1,945 This Week
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  • 3

    UFTP

    Encrypted UDP based FTP with multicast

    UFTP is an encrypted multicast file transfer program, designed to securely, reliably, and efficiently transfer files to multiple receivers simultaneously. This is useful for distributing large files to a large number of receivers, and is especially useful for data distribution over a satellite link (with two way communication), where the inherent delay makes any TCP based communication highly inefficient. The multicast encryption scheme is based on TLS with extensions to allow multiple receivers to share a common key. UFTP also has the capability to communicate over disjoint networks separated by one or more firewalls (NAT traversal) and without full end-to-end multicast capability (multicast tunneling) through the use of a UFTP proxy server. These proxies also provide scalability by aggregating responses from a group of receivers.
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    Downloads: 1,126 This Week
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  • 4
    cdrtfe

    cdrtfe

    Burn optical discs in various formats

    cdrtfe is a CD/DVD/BD burning application for Microsoft Windows. You can burn data discs, Audio CDs, XCDs, (S)VCDs and DVD-Video discs. It supports creation and writing of ISO images and bootable discs. cdrtfe has a multi-language interface and is also available as portable version.
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    Downloads: 580 This Week
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  • 5
    Fast and user-friendly free tool for drivers's backup, restoration and removal with command line options, automatic restoration from CD\DVD and path formatting. DriverBackup! includes also an interactive command line builder.
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    Downloads: 582 This Week
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  • 6
    EchoLife ONT Tools Huawei

    EchoLife ONT Tools Huawei

    Software para cargar firmware de Routers modem HUAWEI

    Herramienta para cargar firmware a router modem de fibra HUAWEI Modelos admitidos: HG8145V5 - EG8145V5 - HG8245W5-6T y HG8245Q2
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    Downloads: 602 This Week
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  • 7
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    Downloads: 184 This Week
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  • 8
    VertrigoServ WAMP

    VertrigoServ WAMP

    Complete WAMP Server - PHP Apache MySQL for Windows.

    VertrigoServ is a complete free WAMP server allowing PHP development for Windows. It installs Apache 2.4, PHP, MySQL and PhpMyAdmin, both installing and setting up the environment. An uninstaller allows you to remove Vertrigo from hard disc. Vertrigo is a freeware compilation of free software (under GPL, Apache License). Main aplication has closed source code. For license details please take a look at every single component terms and conditions.
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    Downloads: 96 This Week
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  • 9
    Tyrex provides J2EE services for security and authentication, local and distributed transactions, resource configuration and pooling, and TP monitoring.
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    Downloads: 526 This Week
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  • 10
    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: 76 This Week
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  • 11
    Auto Mouse Clicker (AMC)

    Auto Mouse Clicker (AMC)

    The program to simulate mouse clicks

    PayPal: wulgarni@gmail.com new project, chat community - https://wapczat.pl/ Auto Mouse Clicker (AMC) is an automatic mouse clicker that allows for a random time to perform the clicks. You can also specify an exact time. It also allows you to specify the exact location or click to set a random place for clicks in a given area (drawing a square with your mouse). The program supports setting different sequences for clicks.
    Downloads: 53 This Week
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  • 12
    FileCentipede

    FileCentipede

    File centipede is an internet file download manager

    File centipede is an internet file download/upload manager, Torrent client, WebDAV client, FTP client, and SSH client. It's fast, customizable, user-friendly, multi-protocols supported, and free with no ads. It also contains many useful auxiliary tools such as HTTP requester, file merge, and encoders. With the browser integration, you can download audio and videos from websites, even encrypted videos. File centipede makes everything easy and efficient, it's the best internet download manager you can find.
    Downloads: 77 This Week
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  • 13
    i-doit - Open Source CMDB & ITSM Tool

    i-doit - Open Source CMDB & ITSM Tool

    ITIL conform CMDB solution for documenting your entire IT landscape

    i-doit is a web based IT documentation and CMDB. i-doit documents IT-systems and their changes, defines emergency plans, displays vital information and helps to ensure a stable and efficient IT operation: The technical documentation: This means that all information can be organised (details flexibly adjusted), stored and maintained in one place. This allows simple Helpdesk, Support and Planning functions and provides the basis for quality assurance and certification. i-doit allows services to be documented as a logical grouping of objects placed in relation to each other. This provides the basis for (ITIL) processes such as Change and Problem Management, helps to control and manage the SLA (Service Level Agreement) or the communication with users. Its interfaces to other ITSM applications (like Nagios, Request Tracker etc.) allow the entering of data only once in the ITSM environment. i-doit maintains one holistic view of the operational situation.
    Downloads: 49 This Week
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  • 14
    VitalSignsCapture

    VitalSignsCapture

    Download data from medical device interfaces in ICU & Anaesthesia

    A C# .NET app to download or capture data from several medical device interfaces such as Datex AS3 S/5 Anesthesia, Philips Intellivue, GE Dash, Mindray HL7, Spacelabs, Draeger Infinity, Draeger HL7 patient monitors, GE Engstrom, Draeger (MedibusX), Maquet (Servo-i, Servo-U & Flow-i), Puritan Bennett ventilators, Covidien BIS Vista cerebral monitor, Fresenius Agilia, Alaris Carefusion, BBraun Spacecom syringe and volumetric pumps, Roche Cobas ASTM ABG analyzers. Requires Visual Studio 2022, .NET 8 or Visual Studio for Mac to compile. Support for capture from other monitors is planned in future.
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    Downloads: 34 This Week
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  • 15
    M+GUI - A Qt implementation of MameUI
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    Downloads: 97 This Week
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  • 16
    NebiOS Alternative Mirror (Official)

    NebiOS Alternative Mirror (Official)

    An Ubuntu Linux-based OS that aims to end user.

    NebiOS is Ubuntu-based secure, privacy-focused universal OS for daily life, creativity, gaming & more. Official mirror - use if main site has download issues. Main site: https://nebios.org ⚠️ DON'T DOWNLOAD FROM UNKNOWN SOURCES! 🛡️ Privacy: NebiOS has no telemetry, no background data services, no tracking daemons, and cannot send any personal data without user action. Full policy: nebisoftware.com/legal/privacy.html === 🚀 NebiOS X out now! ⚠️ Note on Virtual Machines: NebiOS X is optimized and designed for real hardware performance and native GPU acceleration. Virtualization platforms (VMware, VirtualBox, GNOME Boxes, etc.) may show degraded graphics or system performance. For accurate testing, please install NebiOS X on physical hardware. === System Requirements and informations about before installation can be found at https://nebios.org/download (select your version for it)
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    Downloads: 52 This Week
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  • 17
    Ultimate Auto Typer
    This software is developed in C# using Visual Studio 2010. It act as an online bot.
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    Downloads: 84 This Week
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  • 18

    ISAM File handler

    ISAM file handler compatible with the leading commercial ISAM

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    Downloads: 20 This Week
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  • 19
    AutoVPNConnect

    AutoVPNConnect

    VPN connection keep alive tool

    AutoVPNConnect is a nice tool for everyone that works daily with VPN. This tool keeps your VPN connection open. Every VPN connection created with the Windows built in VPN client is supported. This tool can connect to your VPN when starting Windows, and can be configured to work completely in background. Install it and enjoy! Supported Windows versions: Windows 7 Windows 8 Important note: AutoVPNConnect is since version 3.0 significantly improved. When you are running an older version, you should consider to upgrade to the latest version. See the page 'Files' for more information.
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    Downloads: 20 This Week
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  • 20
    ngrep strives to provide most of GNU grep's common features,applying them to the network layer. ngrep is a pcap-aware tool that will allow you to specify extended regular expressions to match against data payloads of packets. SUPPORT/REPORTING BUGS: please use https://github.com/jpr5/ngrep/issues Thank you!
    Downloads: 15 This Week
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  • 21
    GPU,  a Global Processing Unit

    GPU, a Global Processing Unit

    A framework for distributed computing

    An extensible framework for distributed computing on P2P grids. We support peaceful free and open research and build an internet supercomputer. We render movies, solve Eternity puzzles, predict climate and improve a ~30 GHz cluster of clients.
    Downloads: 23 This Week
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  • 22
    NetCafe

    NetCafe

    Internet Cafe Software

    Whats New: Setup updated to be fully compatible with Windows 10 WARNING anti-virus may report that NetCafe is infected with a Virus. This kind of problem is known as "False Positive Alert", it's a common problem in many client-server software's. if this happen you can either disable your anti-virus during setup or add NetCafe to your anti-virus exception list. NetCafe is a client-server software allows you to control your internet cafe from one single computer. NetCafe could help a lot of internet cafe owners, because it allows you to control every single computer inside your cafe, monitor the clients activites in real-time, calculate the payments, and much more. NetCafe also came up with a cafeteria module allows you to manage and control your clients requests in case you have a cafeteria in your internet cafe. Minimum System Requirements Windows XP or higher Pentium processor at 500 MHz or higher 256 MB RAM 100 MB free storage space
    Downloads: 38 This Week
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  • 23
    Ultimate Settings Panel

    Ultimate Settings Panel

    An all in one settings solution for a multitude of configurations.

    An all in one settings solution for a multitude of configuration options in Windows, Office and internet browsers. We have covered the following systems; Windows XP, Vista, 7, 8 & 10 & Outlook 2010 & 2013. Ultimate Settings Panel is a tab based utility giving you the option of selecting from a wide range of different configuration options. So all you have to do is select a tab and click the button for the configuration item that you wish to use. This program also includes Windows God Mode built into it for extra configuration items.
    Downloads: 20 This Week
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  • 24
    VeraWipe

    VeraWipe

    Secure Disk Wipe

    A secure disk wipe tool based on VeraCrypt encryption engine. Release archives are signed using PGP key with fingerprint 607E5A7AD030D38E5E5C2CA502C30AE90FAE4A6F belonging to Mounir IDRASSI and which can be found on major key servers (e.g.. https://keys.openpgp.org/vks/v1/by-fingerprint/607E5A7AD030D38E5E5C2CA502C30AE90FAE4A6F).
    Downloads: 19 This Week
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  • 25
    DOS/32 Advanced DOS Extender is a drop-in replacement for the DOS/4GW DOS Extender and compatibles. Being fast, small and flexible DOS/32A can be used in many environments, from embedded systems to DOS emulators, by both developers and end users alike.
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    Downloads: 32 This Week
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