Browse free open source System software and projects for Windows and Windows Server 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
    System Informer

    System Informer

    View and manage processes, services and more with this powerful tool

    System Informer is a free and open source process viewer. This multi-purpose tool will assist you with debugging, malware detection and system monitoring.
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    Downloads: 17,287 This Week
    Last Update:
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  • 2
    FileVerifier++
    FileVerifier++ is a Windows utility for calculating hashes using a number of algorithms including CRC32, MD5, SHA-1, SHA-256/224/384/512, WHIRLPOOL, and RIPEMD-128/160/256/320. Supported hash file formats include MD5SUM .MD5, SFV, BSD CKSUM, and others.
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    Downloads: 82 This Week
    Last Update:
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  • 3
    Polarity Browser

    Polarity Browser

    A fast, secure, stable web browser powered by Chromium and Trident.

    Polarity is a dual engine browser powered by both Chromium and Trident that focuses on system efficiency by bringing low RAM and low CPU usage. This browser was also programmed to be optimized for Windows with an Android version available. Browse the web with an uncomplicated UI that is highly customizable with themes, apps, and extensions from the Polarity Store, GreasyFork, OpenUserJS, and UserStyles. Polarity also comes with a built in password manager which safely encrypts all data to prevent theft. Polarity also comes with a built in adblocker and privacy tools such as proxy/VPN support and header masking to prevent further tracking online. If you appreciate all the hard work that we put into creating and developing Polarity, please consider giving a small donation at: https://polaritybrowser.netlify.com/donate
    Downloads: 52 This Week
    Last Update:
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  • 4
    File system/directory monitoring utilities with loggin and task processing support (can execute files or make a WCF service call). Multiple configuration options. Source code libraries can be used to create a custom file system monitor.
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    Downloads: 48 This Week
    Last Update:
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  • 5
    NetworkMiner packet analyzer

    NetworkMiner packet analyzer

    The Network Forensics Tool

    NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows that can detect the OS, hostname and open ports of network hosts through packet sniffing or by parsing a PCAP file. NetworkMiner can also extract transmitted files from network traffic. New versions of NetworkMiner are released exclusively on www.netresec.com since version 2.0 of NetworkMiner. This page on SourceForge is only kept to provide hosting of older versions of the software. To get the latest version of NetworkMiner, please visit: http://www.netresec.com/?page=NetworkMiner
    Downloads: 40 This Week
    Last Update:
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  • 6
    Simple Software-restriction Policy

    Simple Software-restriction Policy

    Control which folders programs can be run from.

    A software policy makes a powerful addition to Microsoft Windows' malware protection. In particular, it is more effective against ransomware than traditional approaches to security. If you know about the Linux 'execute permission' bit then you'll understand what this is for. The mode of operation is somewhat different in that execute permission is granted to folders and subfolders rather than individual files, but the intention is the same, to stop undesirable or unknown software from launching unless you OK it. Additionally, it is possible to specify that certain executables (typically browsers and email clients) are run with reduced rights. This is a valuable damage-limitation measure against browser plugin vulns, etc. The protection can be turned off without a reboot whilst installing legitimate software, and will automatically reactivate after a specified time
    Downloads: 23 This Week
    Last Update:
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  • 7
    xpy
    xpy is a small software, securing your Windows 2000/XP/2003 installation and protecting your privacy. In addition to so-called Antispy features, it disables common security threats (RPC/DCOM, LMHash) and increases your Windows performance.
    Downloads: 8 This Week
    Last Update:
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  • 8
    THIS PROJECT HAS BEEN ABANDONED SINCE 2007, NO SUPPORT WILL BE PROVIDED. Winpooch is a watchdog for Windows (2000, XP, 2003, but only 32-bits). It detects modifications in your system, so as to detect a trojan or a spyware installation. It also includes a real-time anti-virus. Set your own security level for anti-spyware, ant
    Downloads: 8 This Week
    Last Update:
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  • 9
    The OVAL Interpreter is a freely available reference implementation that demonstrates the evaluation of OVAL Definitions. Based on a set of OVAL Definitions the interpreter collects system information, evaluates it, and generates a detailed OVAL Results file. Developed to demonstrate the usability of OVAL Definitions and to ensure correct syntax and adherence to the OVAL Schemas by definition writers, it is not a fully functional scanning tool nor an enterprise scanning tool. It is a simplistic, command-line application that has the ability to execute OVAL Content on an end system. To learn more about organizations that provide OVAL content and tools or otherwise support the OVAL Language, please see the OVAL Adoption Program (http://oval.mitre.org/adoption/).
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    Downloads: 3 This Week
    Last Update:
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  • 10

    Cosign: Web Single Sign-On

    Open Source Web Single Sign-On

    An open source project originally designed to provide the University of Michigan with a secure single sign-on web authentication system. Cosign is part of the National Science Foundation Middleware Initiative (NMI) EDIT software release.
    Downloads: 2 This Week
    Last Update:
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  • 11
    "Password Hook" is a Window Password Filter DLL that sends any Windows password changes to a script/program, stored in the registry by a configuration utility. The DLL is effectively a generic windows password filter.
    Downloads: 3 This Week
    Last Update:
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  • 12

    rlink

    ssh-tunnel instead vpn in one exe

    Create ssh-tunnel, run another programm and store settings in self. It is easier than to create a vpn and write instructions for the users.
    Downloads: 5 This Week
    Last Update:
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  • 13
    RunAsAdmin Explorer Shim is a tool that lets administrators to keep and easily use their administrative rights but still enjoy safety of using least privileged accounts.
    Downloads: 2 This Week
    Last Update:
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  • 14
    KeyCounter is a tool for the tray-bar that helps you to get statistics about the useage of your computers keyboard, mouse and uptime. KeyCounter is not intended to work as a keylogger.
    Downloads: 1 This Week
    Last Update:
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  • 15
    Velo is an open Identity and Access Management platform, with many IDM services such as provisioning, access control, password synchronization, audit & compliance, self service interfaces and much more.
    Downloads: 1 This Week
    Last Update:
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  • 16
    A set of tools for querying and modifying the ACL's (access control lists) and ACE's (access control entries) of files, services, registry keys, printers, processes, threads, timers, mutexes, tokens, events, and semaphores in Windows 2000 and later
    Downloads: 0 This Week
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  • 17
    Small C# web-application for single-sign-in based on B2XCore. Support of multiple security-provider.
    Downloads: 0 This Week
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  • 18
    CartoReso intends to facilitate enterprise computer network mapping.
    Downloads: 0 This Week
    Last Update:
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  • 19

    Cnc's IP Data Volume Report

    Logs IP to IP contact, number of packets, bytes.

    Cnc's IP Data Volume Report: Logs IP to IP contact, number of packets, bytes, time of contact, Ethernet too! View via local web interface. Very simple for those who want to view who your computer is contacting the most!
    Downloads: 0 This Week
    Last Update:
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  • 20
    Derived from TrueCrypt 6.3 release, I added some command line options to "TrueCrypt Format.exe" to allow TrueCrypt volumes to be created without using the graphical user interface
    Downloads: 0 This Week
    Last Update:
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  • 21
    DAD is a Windows event log and syslog management tool that allows you to aggregate logs from hundreds to thousands of systems in real time. DAD requires no agents on the servers or workstations. Correlation and analysis is driven through a web front end.
    Downloads: 0 This Week
    Last Update:
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  • 22
    Dir2Encrypt
    Dir2Encrypt encrypt a folder with privat files and subfolders into a single password protected archive file. The archive file can be a zip file or a self extracting exe file. Microsoft Net Framwork 2 has to be installed.
    Downloads: 0 This Week
    Last Update:
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  • 23

    Dynamic Proxy

    Fetches proxies from hidemyass and changes system proxy in real time.

    Programmer name : Daryl Varghese and Kishan Patel Dynamic Proxy/Madleets Proxy v1.0 is a dynamic proxy made for madleets.com. The proxy application fetches the best proxies from hidemyass.com and changes the system proxy configuration in realtime. Features: 1.It work on all windows systems(both32bit and 64bit) 2.It has no dependencies 3. Uses the wininet Api to change system proxy 4. It is less than 700kb 5. Proxy can be changed by either hotkey or userdefined time intervals. 6.Easy and simple GUI **THIS PROJECT IS NO LONGER MAINTAINED**
    Downloads: 0 This Week
    Last Update:
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  • 24
    Fingerprint Copy is a forensic copy utility. The utility creates copy of file(s) and verifies this copies with digital fingerprints(checksum) of the source file(s). The utility is in a early development state. Planed: March 2009 First Command-line Utiliy
    Downloads: 0 This Week
    Last Update:
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  • 25
    Launch Admin for Windows XP allows users using a limited user account (LUA) to perform administrative tasks conveniently. It is for users who want the security of a LUA account combined with the power to make “on demand” administrative changes.
    Downloads: 0 This Week
    Last Update:
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