Open Source Communications Software

Browse free open source Communications software and projects below. Use the toggles on the left to filter open source Communications software by OS, license, language, programming language, and project status.

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  • 1
    VTun is the easiest way to create Virtual Tunnels over TCP/IP networks with traffic shaping, compression, and encryption. It supports IP, Ethernet, PPP and other tunnel types. VTun is easily and highly configurable. VPN, Mobile IP, Shaping, etc
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    Downloads: 4,244 This Week
    Last Update:
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  • 2
    PHPMailer

    PHPMailer

    A full-featured email creation and transfer class for PHP

    A PHP email creation and transport class featuring file attachments, SMTP servers, CCs, BCCs, HTML messages, word wrap, and more. Sends email via sendmail, PHP mail(), QMail, or with SMTP. PHPMailer is used by many popular PHP development frameworks and is one of the most popular email-generating and sending libraries in the world. This project is defunct here on sourceforge – it's now maintained on Github at https://github.com/PHPMailer/PHPMailer. Documentation is available at https://github.com/PHPMailer/PHPMailer/wiki
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    Downloads: 154 This Week
    Last Update:
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  • 3
    Open source DKIM library, MTA filter implementation and associated tools.
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    Downloads: 110 This Week
    Last Update:
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  • 4
    Torrent Search
    Torrent Search is a cross-platform application, allowing to search for torrent files on different websites. Supported websites are integrated through plugins, which allows to easily extend the number of websites supported.
    Downloads: 22 This Week
    Last Update:
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  • Reach Your Audience with Rise Vision, the #1 Cloud Digital Signage Software Solution Icon
    Reach Your Audience with Rise Vision, the #1 Cloud Digital Signage Software Solution

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  • 5
    OpenL2TP is an L2TP client/server written specifically for Linux. It has been designed for use as an enterprise L2TP VPN server or for use in commercial, Linux-based, embedded networking products.
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    Downloads: 74 This Week
    Last Update:
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  • 6
    AChat enables you to chat on your local network (LAN). But you can also share entire directories or send specific files, show images to other users and send messages even to users who are currently offline. Everything with full Unicode support.
    Downloads: 15 This Week
    Last Update:
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  • 7
    This project continued development of the legacy Direct Connect client valknut from 2006-2009.
    Downloads: 10 This Week
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  • 8
    A simple, easy to setup journal system that features customizable display, comments, html support and RSS feeds.
    Downloads: 28 This Week
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  • 9
    Pidgin Extended Preferences provides additional preferences for Pidgin users. Most notably, it allows you to change the font size of conversation text without changing your theme and to change how quickly or whether the buddy list tooltips appear.
    Downloads: 16 This Week
    Last Update:
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  • Create and run cloud-based virtual machines. Icon
    Create and run cloud-based virtual machines.

    Secure and customizable compute service that lets you create and run virtual machines.

    Computing infrastructure in predefined or custom machine sizes to accelerate your cloud transformation. General purpose (E2, N1, N2, N2D) machines provide a good balance of price and performance. Compute optimized (C2) machines offer high-end vCPU performance for compute-intensive workloads. Memory optimized (M2) machines offer the highest memory and are great for in-memory databases. Accelerator optimized (A2) machines are based on the A100 GPU, for very demanding applications.
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  • 10
    Open Source Learning Management System. This LMS/LCMS has most basic features. Includes support for group collaboration for students with separate forums and file archives.
    Downloads: 14 This Week
    Last Update:
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  • 11
    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
    Last Update:
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  • 12
    Java Remote Desktop

    Java Remote Desktop

    Cross-platform java remote desktop control and desktop sharing

    jrDesktop is a cross-platform java remote desktop control and desktop sharing application that provides a remote display and control of a computer. It has many features. It works only on LAN, for the Internet-ready version visit www.firnass.com
    Downloads: 11 This Week
    Last Update:
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  • 13
    X-Chat Aqua is X-Chat with an Aqua interface for MacOS X. X-Chat Aqua uses the irc engine from X-Chat, and is designed to look and feel like the GTK+ front end.
    Downloads: 2 This Week
    Last Update:
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  • 14
    Proteus is complete new kind of taskbar which will soon completly replace the common windows taskbar. You can add different components which will add completly new functions and possibilities to your Proteus Taskbar.
    Downloads: 6 This Week
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  • 15
    GTK-based BitTorrent client. You can find Ubuntu packages of Flush at http://bit.ly/cYBYQf. Git repository: http://bit.ly/cdwdPE.
    Downloads: 2 This Week
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  • 16
    This project is a C++ library which allows incorporating DKIM into an existing MTA or other application. It provides full support for signing, verifying, and SSP. It is compliant with RFC 4871.
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    Downloads: 5 This Week
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  • 17
    FreeDoor is a 32-bit BBS Door Development Kit for Windows and OS/2. All up-to-date information and future releases are available from http://www.elysoft.net/
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    Downloads: 7 This Week
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  • 18
    mtrace is a multicast traceroute utility, which traces, with the help of the routers along the way, the path from a multicast receiver to a multicast source.
    Downloads: 5 This Week
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  • 19
    A lightweight server-less Instant Messenger program designed with use during school or other restrictive environments in mind.
    Downloads: 5 This Week
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  • 20

    StyxTorrent

    A BitTorrent Client

    StyxTorrent is a BitTorrent client. A BitTorrent client is application that manages uploading and downloading of a torrent by following BitTorrent protocol, which is a peer to peer file sharing protocol used for distributing data of all size over internet. Besides basic operations of uploading and downloading some clients provide option to create torrent file on client system, so does StyxTorrent.StyxTorrent uses library named libtorrent (Arvid Norberg, Rasterbar Software) and Boost (Boost.org) to implement BitTorrent protocol which was very helpful as it reduced the development time and gave some air to work on BitTorrent client logic. Libtorrent & Boost are written in c++ and so is StyxTorrent. To be specific StyxTorrent in written in MFC (Microsoft Foundation Classes) and ATL (Active Template Library) which fall under Visual C++. MFC provides easy access to Windows API and some of wonderful features provided by Windows Operating System. Visual Studio 2008 was used as IDE .
    Downloads: 4 This Week
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  • 21
    Tapioca is a framework for Voice over IP (VoIP) and IM applications. Its main goal is to provide an easy way for developing and using VoIP/IM services in any kind of application. It provides a pluggable interface for different protocols, such as SIP/XMPP
    Downloads: 4 This Week
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  • 22
    UpFTP 2

    UpFTP 2

    Share files quickly over FTP

    UpFTP 2 is a Windows program that lets you share files using an FTP server in just a few clicks. It works on Windows NT 4.0 through Windows 10, as well as Linux with Wine 1.4 or later.
    Downloads: 4 This Week
    Last Update:
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  • 23
    A suite of software tools written in Java for authoring and delivery of IMS standard-compliant learning objects. *** This site only contains the source code. For the binaries go to http://www.reload.ac.uk ***
    Downloads: 4 This Week
    Last Update:
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  • 24
    AfterLogic WebMail Lite 7
    AfterLogic WebMail Lite PHP is a free AJAX webmail application. Users can receive, view, manage, compose, and send email through web interface (IMAP and SMTP supported). Source code included.
    Downloads: 1 This Week
    Last Update:
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  • 25
    AIMLpad is an AIML chatbot program with extra features for the bot developer. Includes a scripting language (besides AIML) and includes features to use the OpenCyc and ConceptNet reasoning systems. Has a micro web server, uses IRC, as well as MS Agen
    Downloads: 3 This Week
    Last Update:
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