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.

  • Veeam Data Platform v13.1 - Get Your Free Trial Icon
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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: 557 This Week
    Last Update:
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  • 2
    PostfixAdmin
    PostfixAdmin is a Web Based Management tool created for Postfix. It is a PHP based application that handles Postfix Style Virtual Domains and Users that are stored in MySQL, PostgreSQL or SQLite
    Downloads: 31 This Week
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  • 3
    GeoNetwork opensource - Metadata Catalog
    A web based Metadata Catalog Server for data description and discovery. Supports both generic and geospatial data discovery. It implements international standards (e.g. ISO19115/19139/19119, ISO19115-3, DCAT-AP, CSW 2.0, OGC API Records). It originates from the United Nations and is used by many governments as geoportal software. Active development and discussion takes place on GitHub and OSGeo Discourse. You can also connect directly with the companies supporting the development. Source code available on github https://github.com/geonetwork/
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    Downloads: 153 This Week
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  • 4
    Pydio Cells

    Pydio Cells

    Formerly AjaXplorer, file sharing platform for the enterprise

    Pydio Cells is the mature open source alternative to dropbox and box, for the enterprise. Why building your own box? You need to access your documents across multiple devices, and regularly share documents (weblinks) and folders with your contacts and teams. Still, using a consumer SaaS box or drive service is neither practical nor safe. And enterprise SaaS box or drive services are expensive and come with Disk Storage that you already have on your servers or private cloud. How to build your own box with Pydio? Easily install Pydio on your servers or cloud of choice, Simply share documents and folders with your teams, Administrate your box with an Entreprise grade console (rights, groups, plug ins), Access documents with a Web Gui, Smartphones and tablet apps (iOS, Android), Sync folders on your computer (PC, Mac, Linux).
    Downloads: 18 This Week
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  • One Monitoring Tool for IT, OT and Cloud | Free Trial Icon
    One Monitoring Tool for IT, OT and Cloud | Free Trial

    Vendor-agnostic monitoring across on-prem servers, cloud platforms and OT devices, all in one dashboard. No more tool sprawl.

    Modern infrastructure spans data centers, cloud platforms and factory floors, and every blind spot between them is a risk. PRTG supports SNMP, WMI, SSH and other standard protocols to monitor IT, OT and hybrid environments through one customizable dashboard. Build the views your team needs, from network health to application performance, without switching tools. Try PRTG free for 30 days now.
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  • 5
    Zentyal, Linux Small Business Server

    Zentyal, Linux Small Business Server

    Zentyal is a Linux Small Business Server

    Zentyal Server is an easy to use and affordable Linux server, specially designed to meet the needs of small and medium businesses Thanks to Zentyal's Samba integration, Zentyal provides native compatibility with Microsoft Active Directory, allowing you to join Microsoft clients to a domain and manage them easily. Zentyal Server incorporates all the network services required in a small and medium business environment: * Directory & Domain Server with native compatibility with Microsoft Active Directory * Mail Server with ActiveSync and webmail * Gateway with firewall and proxy * Infrastructure Server with DNS/DHCP server, Certification Authority and Virtual Private Networks For more information and download, please access the project's home page.
    Downloads: 10 This Week
    Last Update:
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  • 6
    Convert Webmail to POP3.Is also included a SMTP/POP3 tunneling system that allow send and receive email in a private network HTTP PROXY based. All connection are plugin based. Over 450 email server supported and tested, GMAIL POP3/SMTP over Proxy Network.
    Downloads: 7 This Week
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  • 7
    cybyd

    cybyd

    xBTiT moDDeD`

    cybyd is modded version of xBTiT
    Downloads: 8 This Week
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  • 8
    Thunderbird-Tray is a system tray launcher tool for Mozilla Thunderbird, the popular e-mail client. You can use TB-Tray to hide Thunderbird to the tray while you don't need it. When you click the tray icon, TB-Tray will restore Thunderbird.
    Downloads: 4 This Week
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  • 9
    SyncManager

    SyncManager

    Sync manager that helps you sync your files across different locations

    SyncManager is a custom-made lightweight synchronization manager that helps you synchronize files and folders across different locations. SyncManager lets you synchronize your data in two ways: manually or automatically. Manual syncing mode lets you decide what and when to synchronize data, while automatic syncing mode synchronizes data based on its average synchronization time. It also offers three distinct synchronization types: two-way, one-way, and one-way update, allowing you to synchronize data between folders in different ways. Plus, it has filtering and customizable versioning settings that help you to set synchronization more precisely. You can also decide how to handle old versions of files and folders: move them to the trash, delete them permanently, or version them in a special folder. The utility is operating as a fully automated solution that seamlessly launches at system startup.
    Downloads: 10 This Week
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  • Fully Managed MySQL, PostgreSQL, and SQL Server Icon
    Fully Managed MySQL, PostgreSQL, and SQL Server

    Automatic backups, patching, replication, and failover. Focus on your app, not your database.

    Cloud SQL handles your database ops end to end, so you can focus on your app.
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  • 10
    MailCleaner

    MailCleaner

    Anti Spam SMTP Gateway

    MailCleaner Open Source Edition is now discontinued but will continue under the spamtagger project https://github.com/SpamTagger [antispam] MailCleaner is an anti-spam / anti-virus filter SMTP gateway with user and admin web interfaces, quarantine, multi-domains, multi-templates, multi-languages. Using Bayes, RBLs, Spamassassin, MailScanner, ClamAV. Based on Debian. Enterprise ready. MailCleaner is an anti spam gateway installed between your mail infrastructure and the Internet. It includes a complete GNU/Linux OS and a graphical web interface for user and administrative access. It comes in the form of virtual machine templates.. - fully compatible with any SMTP mail server (Exchange, Zimbra, O365,...)
    Downloads: 2 This Week
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  • 11
    Torrent Search Engine (WinApp)

    Torrent Search Engine (WinApp)

    Fast and powerful search engine

    Torrent Search Engine: TorrentSearch is a framework and script language for searching Bit Torrent websites and search engines for torrents.
    Downloads: 9 This Week
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  • 12
    Dayon! (active)

    Dayon! (active)

    Remote assistance made easy!

    Dayon! is an open source remote desktop and assistance solution. It is easy to use, secure, requires no registration and is free for personal and commercial use!
    Downloads: 8 This Week
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  • 13
    OpenEMM e-mail & marketing automation

    OpenEMM e-mail & marketing automation

    software for email automation (newsletters, transaction mails, etc.)

    This is an archive for old versions of OpenEMM. You will find the latest version of OpenEMM here: https://wiki.openemm.org OpenEMM is a browser-based enterprise application for email automation like info and marketing newsletters, transaction mails or multi-stage email campaigns. OpenEMM offers tons of features for professional users, among them: a great user interface, template-based HTML mailings, automatic bounce management, mail opening and link tracking, lots of graphical realtime statistics, a content management system, self-defined and behaviour-based target groups, a multi-queue mail backend for maximum sending performance, a time-driven automated data import and export feature, an extensive set of webservices, a plugin interface to easily extend the core functionality, a scripting feature to enhance the functionality of OpenEMM with triggerable customized actions and an audit-proof user activity log.
    Downloads: 1 This Week
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  • 14
    Torrent Search Engine

    Torrent Search Engine

    A fast cross-platform TorrentSearch client

    Torrent Search Engine: TorrentSearch is a framework and script language for searching Bit Torrent websites and search engines for torrents.
    Downloads: 5 This Week
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  • 15
    Sender & Receiver (Wireless Transfer)
    I have designed a wireless transfer software for home use called Sender & Receiver. This software is only compatible with Windows devices and can only be used within the local network (devices must be connected to the same WIFI). The software is very easy to set up and use, even for beginners. With this software, you can easily transfer files between your Windows devices without the need for installation. It is a convenient way to transfer files and share documents, photos, and other data on your home network. Overall, Sender & Receiver is a very convenient and practical wireless transfer tool that makes file sharing easier and more efficient. If you are confused about how to use this software, we will provide a tutorial video later to make it easier for you to get started. Donation: (Buy Me a Coffee) https://www.buymeacoffee.com/AAkent (PATREON) patreon.com/A_A_KENT (PAYPAL) https://www.paypal.com/paypalme/AAKENT
    Downloads: 1 This Week
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  • 16
    An original bruteforce-based encryption/decryption system. BBE was originally conceived to chat with encrypted text on IRC. mIRC and X-Chat support BBE via script addon. BBE can also encrypt MIME encoded files. Blowfish encryption is currently supported.
    Downloads: 1 This Week
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  • 17
    NokSync is a Thunderbird extension, which synchronizes contacts between Mozilla Thunderbird and most NOKIA phones. NokSync will compare Thunderbird address books with contacts in a NOKIA phone, and synchronize them under user control.
    Downloads: 1 This Week
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  • 18
    RainLoop Webmail (PHP)

    RainLoop Webmail (PHP)

    Simple, modern & fast web-based email client

    Modest system requirements, decent performance, simple installation and upgrade, no database required - all these make RainLoop Webmail a perfect choice for your email solution.
    Downloads: 1 This Week
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  • 19
    SmartSieve is a web based graphical user interface for creating and managing sieve scripts for mail filtering and vacation messaging on a cyrus imap mail server. Written in PHP, SmartSieve is easy to configure and use.
    Downloads: 1 This Week
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  • 20
    ARD is a remote administration tool for Unix/Linux & 95/98/ME/NT/2000 systems. Based on VNC technology , you can use ARD of the VNC to interact with a remote computer as though it's right next to you. ARD is great free remote-desktop tool.
    Downloads: 0 This Week
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  • 21
    Allo stato attuale Internet non sara totalmente libera fintantochč non saranno completamente libere ed accessibili le strutture fisiche che lo trasportano.CityLAN vuole essere il manifesto di questa libertŕ...
    Downloads: 0 This Week
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  • 22
    Using the new C# Dll from swig portability of Openobex/ObexFtp to write a nice GUI able to transfer file between two devices with obex protocol. More Info’s here: http://cs-obexftp.wiki.sourceforge.net/
    Downloads: 0 This Week
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  • 23
    CyBerFuN xBTiT
    CyBerFuN xBTiT by cybernet2u / I only install hacks and maintain them / all the credits for the core source goes to : http://www.btiteam.org new files here ->https://github.com/cybyd/cybyd
    Downloads: 0 This Week
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  • 24
    A set of tools for management of the Cyrus IMAPd server in various scenarios. Actually I am working on heavy integration of Cyrus with Microsoft Active Directory 2003. The tools includes AD sync-tools, web administration page and more resources.
    Downloads: 0 This Week
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  • 25
    GALProxy is a multithread proxy server written in java. It can elaborate all upcoming requests from most common browsers. It can be used in a LAN in order to concur the sharing of an Internet connection; it implements local caching, content filtering an
    Downloads: 0 This Week
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