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
    ophcrack

    ophcrack

    A Windows password cracker based on rainbow tables

    Ophcrack is a Windows password cracker based on a time-memory trade-off using rainbow tables. This is a new variant of Hellman's original trade-off, with better performance. It recovers 99.9% of alphanumeric passwords in seconds.
    Leader badge
    Downloads: 3,327 This Week
    Last Update:
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  • 2
    BRL-CAD

    BRL-CAD

    Open Source Solid Modeling CAD

    BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal-processing tools.
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    Downloads: 143 This Week
    Last Update:
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  • 3
    libjpeg is a free software library written for JPEG image compression.
    Downloads: 44 This Week
    Last Update:
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  • 4

    HH2B_4EVER

    HH2B & HH3A non-official router firmware

    Home Hub 2 Type B Non-official all singing and dancing improved firmware Now Plus Home Hub 3 Type A! Note: Although this is a good source of how some of it was done; please whiz over to http://openwrt.ebilan.co.uk/ for up to date info... V2A, V2B and V3A are now supported in OpenWRT.
    Downloads: 21 This Week
    Last Update:
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    Paessler - Monitor Your Whole Network in Minutes

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  • 5
    xinco - Document Management System, DMS
    xinco [eXtensibe INformation COre] is a powerful Web-Service based Information and Document Management System (DMS) for files, text, URLs and contacts, featuring ACLs, versioning, full text search, an FTP-like client (easy install, J2EE+MySQL/PostgreSQL)
    Downloads: 13 This Week
    Last Update:
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  • 6
    Emu10k1 sound driver
    Downloads: 12 This Week
    Last Update:
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  • 7
    bbwin
    BBWin is a Windows agent for Xymon Server. It is written in C++ with boost library and use WiX to generate msi installer. It is should be compatible with big-brother server also.
    Downloads: 21 This Week
    Last Update:
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  • 8

    hpsx64

    Highly-Experimental Playstation Simulator x64

    Highly-Experimental Playstation Simulator for x64 based systems. This is a WORK IN PROGRESS.
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    Downloads: 27 This Week
    Last Update:
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  • 9
    Wintel based platform system power management and analysis utilities.
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    Downloads: 25 This Week
    Last Update:
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  • 10
    Revival/2k is a modular BBS/suite of internet servers and a web-site management system. It consists of multiple web applications (forums, mail, login, etc), internet servers (NNTP, POP3, etc) and a Telegard/Renegade styled telnet server all interacting
    Downloads: 10 This Week
    Last Update:
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  • 11
    The Wizard's Apprentice is an application that allows you to ask questions from a script. It uses Windows dialog boxes in the so-called Wizard style: dialogs asking one question at a time, with a Back button, a Next button and a Cancel button.
    Downloads: 10 This Week
    Last Update:
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  • 12
    BeOS API and desktop ontop the Linux kernel.
    Downloads: 12 This Week
    Last Update:
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  • 13
    OpenSAF
    Open Source High Availability Middleware Generally Based on SA Forum Specifications
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    Downloads: 11 This Week
    Last Update:
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  • 14
    Simple Shutdown Scheduler
    Simple Shutdown Scheduler (also named 'SSS') is a light and useful tool to schedule shutdowns/reboots/... for any computer in your network. It's free, open source, light, simple to use, secure and it ALWAYS WORKS.
    Downloads: 3 This Week
    Last Update:
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  • 15
    Yet Another (remote) Process Monitor
    Yet Another Process Monitor (YAPM) is a powerful process viewer for Windows that monitors the services & processes, their modules, threads, handles, windows, TCP/UDP connections... etc. running on local system or on any of the computers on your network.
    Downloads: 2 This Week
    Last Update:
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  • 16
    With this project I intend to write a really, really simple OS, just for fun and learning. I think I will never have a really usable version, as I said, that's no my objective.
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    Downloads: 7 This Week
    Last Update:
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  • 17
    An easy to use Development Environment for OS developers to design, write, compile, test, and publish new or existing OS projects with ease.
    Downloads: 13 This Week
    Last Update:
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  • 18
    Electronical interlocking system for modular model railroad layouts.
    Downloads: 6 This Week
    Last Update:
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  • 19
    Operating system project from scratch to design and implement all components from boot strapping,hardware interrupts , memory manger ,file system , etc .
    Downloads: 3 This Week
    Last Update:
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  • 20
    Plugins for the Code::Blocks IDE to support interpreted languages. File Manager and Tools+ plugins are now part of Code::Blocks contrib. Code in SVN. Active development is at github.com/spillz/codeblocks-python. SVN here is no longer maintained.
    Downloads: 5 This Week
    Last Update:
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  • 21
    This is a character and items editor for the game Diablo 2 (D2). This also features updates for the expansion pack Diablo 2 LOD. Features include stat editor, money, inventory, and gem upgrade system. Donations are needed and will soon be accepted!
    Downloads: 5 This Week
    Last Update:
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  • 22
    Dreamos is an operating system developed on Sega Dreamcast to be ported to an array of embedded devices. The goal of the project is to be able to run non-ported Unix programs on the Sega Dreamcast and other embedded devices with ease and POSIX compliance
    Downloads: 5 This Week
    Last Update:
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  • 23
    This project will host a service which will contain virtual packages (using MS App Virtualization and SVS technologies) of most common Open source apps. Kindly use the tracker to suggest for opensource applications which we shall publish.
    Downloads: 1 This Week
    Last Update:
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  • 24
    SetTime-java, tool to get time from a server machine and set this time in a client machine ! SetTime-java, ferramento feita para obter a hora de uma máquina server e setar este hora em uma máquina cliente !
    Downloads: 4 This Week
    Last Update:
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  • 25
    easy fusion is a java-based framework that intends to automatically deploy and control information fusion systems (IFS) on distributed and dynamic resources.
    Downloads: 4 This Week
    Last Update:
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