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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.

  • Full Control for Complex IT - Try PRTG Now Icon
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  • Run applications fast and securely in a fully managed environment Icon
    Run applications fast and securely in a fully managed environment

    Cloud Run is a fully-managed compute platform that lets you run your code in a container directly on top of scalable infrastructure.

    Run frontend and backend services, batch jobs, deploy websites and applications, and queue processing workloads without the need to manage infrastructure.
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  • 1

    eMule

    A free peer-to-peer (P2P) file sharing client

    eMule is a free peer-to-peer (P2P) file-sharing client for Microsoft Windows that was launched in 2002 as an alternative to eDonkey2000. To date, eMule is one of the world’s largest and most trustworthy P2P file-sharing clients. eMule includes advanced search features, file checks for corruptions while downloading, a preview while downloading function, and a credit system to reward frequent uploads.
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    Downloads: 16,159 This Week
    Last Update:
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  • 2
    Vuze - Azureus

    Vuze - Azureus

    An extremely powerful and configurable BitTorrent client

    Vuze (formerly Azureus) is an extremely powerful and configurable BitTorrent client. Search and download torrent files. Play, convert and transcode videos and music for playing on many devices such as PSP, TiVo, XBox, PS3, iTunes (iPhone, iPod, Apple TV).
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    Downloads: 2,935 This Week
    Last Update:
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  • 3
    OpenKM Document Management - DMS

    OpenKM Document Management - DMS

    Document Management System and Content Management System

    OpenKM is a electronic document management system and record management system EDRMS ( DMS, RMS, CMS ). It provides modern and flexible architecture that meet today's IT demands, based on open technology (Java, Tomcat, GWT, Lucene, Hibernate, Spring and jBPM), powerful and scalable multiplatform application. OpenKM is a Web 2.0 application that works with Internet Explorer, Firefox, Safari and Opera. Can be configured in major DMBS like Oracle, PostgreSQL and MySQL among others. Due to its technological architecture design, OpenKM meets the document management needs of businesses of all sizes (from SMEs to big corporations). Thanks to its elegant and intuitive interface, OpenKM transforms complex operations into easy tasks. The most relevant functions of OpenKM is the indexing of the most common types of files: text, Office, Office 2007, OpenOffice, PDF, HTML, XML, MP3, JPEG, etc. For a complete feature list take a look at http://goo.gl/au8cQy
    Leader badge">
    Downloads: 895 This Week
    Last Update:
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  • 4
    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: 117 This Week
    Last Update:
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  • Dominate AI Search Results Icon
    Dominate AI Search Results

    Generative Al is shaping brand discovery. AthenaHQ ensures your brand leads the conversation.

    AthenaHQ is a cutting-edge platform for Generative Engine Optimization (GEO), designed to help brands optimize their visibility and performance across AI-driven search platforms like ChatGPT, Google AI, and more.
    Learn More
  • 5
    Claroline

    Claroline

    Open Source Learning Management System

    Claroline is collaborative learning environment based on PHP/mySQL. It allows teachers or education institutions to create and administer courses through the web. The software provides group management, forums, document repositories, calendar, SCORM,...
    Downloads: 21 This Week
    Last Update:
    See Project
  • 6
    FUDforum
    FUDforum is a super fast and scalable discussion forum. It is highly customizable and supports unlimited members, forums, posts, topics, polls & attachments. It can import XML Feeds and sync with USENET groups and Mailing Lists (bi-directional).
    Downloads: 13 This Week
    Last Update:
    See Project
  • 7
    Dokeos

    Dokeos

    Authoring and Learning management system

    Dokeos is an elearning and course management web application (LMS), translated in 34 languages, already helping thousands of organisations worldwide to manage learning and collaboration activities.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 8
    Web-GMUI web frontend for MLdonkey/aMule/rTorrent/Transmission/giFT. Combines multiple web interfaces with multiple client backends on top of a simple and fast web server. -= This project has moved to p2p-gui.sf.net.! =-
    Downloads: 6 This Week
    Last Update:
    See Project
  • 9

    MBSE BBS for Linux & Unix

    MBSE BBS is a full FTN-capable ANSI BBS and mailer package.

    MBSE BBS is a fully FTN-capable ANSI BBS package including a mailer (ifcico clone), BinkD daemon, mail tosser, TIC processor, filefind, and other utilities allowing access via modem and the Internet using telnet, ssh, http and ftp. Support is offered through the Fidonet MBSE echo and the Micronet MIN_BBS echo.
    Downloads: 2 This Week
    Last Update:
    See Project
  • Cloud-based observability solution that helps businesses track and manage workload and performance on a unified dashboard. Icon
    Cloud-based observability solution that helps businesses track and manage workload and performance on a unified dashboard.

    For developers, engineers, and operational teams in organizations of all sizes

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    Learn More
  • 10
    An eMule client that is based on the original one, but with a new credit system.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 11
    TFTgallery
    TFTgallery is a PHP based web image gallery which doesn't need a database. It uses the directory structure for data storage. The main features are: an on-the-fly thumbnail creation, PDF and ZIP creation, image calendars, EXIF support
    Downloads: 2 This Week
    Last Update:
    See Project
  • 12
    TuEntidad
    TuEntidad is a service of the opensource comunity that incorporates all the features of real life in a virtual world.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 13
    Hathi
    Hathi, P2P client. Rewritten in C#, using mono and .net, for linux and windows platforms. Initial networking support for edonkey, with bittorrent in planning. We are looking for contributors!! Back in action after some busy days :)
    Downloads: 1 This Week
    Last Update:
    See Project
  • 14
    BlogMail software is a CMS and a Webmail application integrated in one. It's based on WordPress MultiUser and has all the functionality of this, like RSS and comments, plus support for LDAP, smarty templates, automatic subdomains and antispam filtering.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Greetings Management Interface. Felicitas allows to manage your contacts and send them programmed greetings by events. It also manages templates to automatize the greetings to send.
    Downloads: 0 This Week
    Last Update:
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  • 16
    GMailSite es un script que permite que uses tu cuenta de correo de GMail para crear una página en la cuál se publicarán todos los archivos adjuntos de tus mensajes que esten guardados bajo algún label en tu cuenta de correo.
    Downloads: 0 This Week
    Last Update:
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  • 17
    LimeSurvey - the Online Survey Tool

    LimeSurvey - the Online Survey Tool

    The leading Open Source survey tool

    LimeSurvey is a survey software to create online surveys. Features open/closed surveys, branching, participant administration, quotas, WYSIWYG HTML editor, email invitations & reminders, assessments, basic statistics and more.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    P2P-GUI is a web frontend for MLdonkey/aMule/rTorrent/Transmission/giFT. It combines multiple web interfaces with multiple client back-ends on top of a simple and fast web server. This project has moved to https://github.com/mwarning/p2p-gui
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    Roundcube Webmail

    Roundcube Webmail

    Free and open source webmail software

    Roundcube Webmail is a browser-based, multilingual IMAP client with an application-like user interface. Roundcube provides the full functionality you'd expect from an email client, including MIME support, address book, folder manipulation, message searching, and spell check. Roundcube is written in PHP and JavaScript.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    pop32smtp picks up emails from POP3 accounts and routes them to a other smtp server
    Downloads: 0 This Week
    Last Update:
    See Project
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