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
    winPenPack

    winPenPack

    The portable software collection

    winPenPack is a project that aims at collecting the most frequently used and most popular open source applications made portable, so that they can be executed without installation from any USB Flash Drive or Hard Disk. The winPenPack suites offer a wide range of portable applications like office tools, internet tools, multimedia tools, development tools, security applications and other frequently used utilities. Everything you need, completely free, open source and portable!
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    Downloads: 501 This Week
    Last Update:
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  • 2
    FLAC is a free lossless compressed audio format which supports streaming and archival. The FLAC project maintains the format and provides a reference encoder/decoder and input plugins for several popular audio players.
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    Downloads: 208 This Week
    Last Update:
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  • 3
    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.
    Downloads: 95 This Week
    Last Update:
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  • 4
    dktools - Dirk Krauses tools

    dktools - Dirk Krauses tools

    Drawing, graphics conversion, software development, administration.

    GUI and command line tools for advanced users and administrators: wxdkdraw - Minimalistic drawing application for use with LaTeX, wxd2lat - Convert wxdkdraw files to LaTeX, bitmap2pp - Convert PNG/JPEG/TIFF/NetPBM to (E)PS or PDF, fig2lat - Convert XFig files to LaTeX, htmlbook - publish HTML like a book, dkcpre - C debugging and tracing preprocessor, itadmin - manage your IT using a MySQL/MariaDB database, dk-fic - file integrity checker, dk-ls - list files, output column order is configurable, dk-cat, dk-sort, dk-lines - text tools for *x and Windows, dk-send, dk-recv - transmit data stream, dk-t2h, dk-t2l - text to HTML or LaTeX conversion.
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    Downloads: 350 This Week
    Last Update:
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  • 5
    WndLpt

    WndLpt

    Handy LPT port pins manager (also support COM port via USB)

    Handy 1..12 LPT port pins manager. Manual direction by keyboard or mouse. Automatic direction by Script or Music Visualization. Access to LPT-port pins in any Windows 98/Me/2k/XP/Vista/7/8/10. Also support direction up to 32 signals via COM port (see video with Arduino UNO). Can work as VIS plugin for Winamp, WMP and AIMP2/3/4.
    Downloads: 13 This Week
    Last Update:
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  • 6
    GGI stands for "General Graphics Interface", and it is a project that aims to develop a reliable, stable and fast graphics system that works everywhere. We want to allow any program using GGI to run on any platform requiring at most a recompile.
    Downloads: 9 This Week
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  • 7
    A tool written in Java that help you to extract your songs and videos from your iPod to your PC.
    Downloads: 2 This Week
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  • 8
    Anime checker is a portable tool that verifies the integrity of your files. It calculates the CRC32 of your files and compares it with the one found in the filename. Useful with fansubbed animes.
    Downloads: 3 This Week
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  • 9
    MARF is a general cross-platform framework with a collection of algorithms for audio (voice, speech, and sound) and natural language text analysis and recognition along with sample applications (identification, NLP, etc.) of its use, implemented in Java.
    Downloads: 1 This Week
    Last Update:
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  • 10
    A slide show for JPG, GIF, BMP, PNG, TIF, & WMF files; maximizes images without distortion. Folders can be selected at run time, or in advance with arguments or a .picshow file. File name, date of picture, and comment can optionally be shown with image.
    Downloads: 1 This Week
    Last Update:
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  • 11
    DVDWeb is a Web Service which provides organization/search/lookup services through JAX-RPC API. The search can be done against the builtin DB (the user\'s private list of DVDs according to UPC codes) or against other Internet sites such as imdb or yahoo.
    Downloads: 0 This Week
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  • 12
    DynAMITE - a software framework for dynamic adaptive multimodal IT ensembles.
    Downloads: 0 This Week
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  • 13
    Firmware for AVR/ARM target boards based on the Elektor Internet Radio and Atmel's Internet Radio AN. The Radio connects to SHOUTcast/Icecast servers and uses VS10xx chips or the Helix decoder. A HTTP server and simple LCD IF is included.
    Downloads: 0 This Week
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  • 14
    FAMOUSO is an event-based publish/subscribe middleware written in C++ for systems ranging from 8Bit micro-controllers up to 32Bit PC/Workstations.
    Downloads: 0 This Week
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  • 15
    Java n-tier Framework and GUI Screen builder/designer, supporting 1, 2 and 3 tier mixed architectures to databases, application servers or local persistent data in files. Extensive documentation including launching from a Web Server.
    Downloads: 0 This Week
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  • 16
    Software from LoCI Laboratory is devoted to information logistics, the study of the flexible coscheduling of the physical resources that underpin computer systems: storage, computation, and data transmission. We use IBP, L-Bone, exNode and LoRS.
    Downloads: 0 This Week
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  • 17
    Programming language: C# Libraries: Mono and .Net 2.0 Supported OS platforms: Any UNIX Mono enabled (ex Linux and FreeBsd) and Windows Problem to be solved: Music update for personal audio and mp3 players Data format used: MP3, WMA, OGG, VQF, XML
    Downloads: 0 This Week
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  • 18
    Ncartographer takes the xml output from an Nmap scan and displays it graphically in an attractive, compact, scalable, and complete manner. Supports saving the display of a scan as .png or .jpg images, and can generate images from a command line.
    Downloads: 0 This Week
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  • 19
    Picjurz is an picture/image management application. Among its planned features are: web-based interface, albums, offline storage manager, hardcopy manager and support for both picture-content and digital-camera metadata.
    Downloads: 0 This Week
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  • 20
    A 3D virtual world engine (community, town, planet and spaced-based) using the NetBeans platform and Java3D
    Downloads: 0 This Week
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  • 21
    Tinger Mask is a free and open source software that can cover a region on the screen. Especially, it can cover the subtitles, which is the best way to learn a second language. It can run on any kinds of platform, like windows, linux, MAC OS, etc.
    Downloads: 0 This Week
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  • 22
    Universal Platform (UP) is a software layer (library) with pseudo-standartized interface which allows now to create applications with C++ for Win32,Linux,FreeBSD operating systems (other languages and OS may be supported in the future)
    Downloads: 0 This Week
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  • 23
    VINARI SOFTWARE

    VINARI SOFTWARE

    Software Facil, Vida Facil

    Vinari Software brinda aplicaciones útiles para Microsoft Windows y distribuciones GNU/Linux, las cuales hacen que la informatica moderna sea mas sencilla. Todas estas aplicaciones estan protegidas bajo la licencia BSD, la cual puede ser leída en el siguiente enlace: https://vinarisoftware.wixsite.com/vinari/licencia
    Downloads: 0 This Week
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  • 24
    Voxampp is an Enterprise IP TriplePlay Application Stack (eIPTAS) a - run-time toolkit - for Internet Entrepreneurs that want to deploy rich IP Carrier Networks. Its goal, to facilitate worldwide Open Access Social Networks using IPTV, VoIP and much more
    Downloads: 0 This Week
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  • 25
    Set of tools and libs for managing structured data in a very flexible way: Imp./Exp. ASCII, XML, SQL, PS, Tex/LaTex, RTF GUI: X-Windows, MS-Windows Interface to C++, DBs, Perl, PHP, Java, TCP/IP LISP-like interpreter written in C++ using C-LIB
    Downloads: 0 This Week
    Last Update:
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