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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.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

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  • 1
    Psi

    Psi

    Psi IM — Qt-based XMPP client

    Psi is cross-platform powerful XMPP client designed for experienced users. There are builds available for MS Windows, GNU/Linux and macOS.
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    Downloads: 379 This Week
    Last Update:
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  • 2
    Psi+

    Psi+

    Psi+ Project — development branch of Psi XMPP client

    Psi is a cross-platform powerful XMPP client designed for experienced users. Psi+ is a development branch of Psi XMPP client. Previously is was a sort of fork but now just consider it as a space for nightly builds.
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    Downloads: 504 This Week
    Last Update:
    See Project
  • 3
    Frost
    Freenet front end written in Java. Supports multiple up/downloads, messages, searching and more.
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    Downloads: 131 This Week
    Last Update:
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  • 4
    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: 15 This Week
    Last Update:
    See Project
  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
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  • 5
    Claws Mail
    Claws Mail is a GTK+ based, lightweight, and fast e-mail client and newsreader. Supports POP3, APOP, IMAP, SMTP, SMTP AUTH, NNTP, LDAP, multiple accounts, spell-checking, addressbook, SSL, GPG, filtering, i18n, & more. It is further extended by plugins.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 6
    LeechCraft
    LeechCraft is a cross-platform modular "internet-client" application. It has plugins that allow one to browse the web, chat via instant messaging (like Jabber or IRC), read RSS/Atom feeds, download files via BitTorrent, Direct Connect and other protocols, play media files and much more.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 7
    R3R
    R3R is a small, fast, and portable reader for RSS, ESF, and Atom feeds.
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    Downloads: 2 This Week
    Last Update:
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  • 8

    SkypeInYourLanguage

    Skype language files for additonal languages (details below)

    PLEASE NOTE So there is no way of making the current Skype accept the .lang file. You cannot run a version older than Skype 7 and even installing 7-8 is fiendishly complicated because it forces everyone into the app unless you run it in compatibility mode. Time to call it a day. I will back up the current files and then shut down the project at the end of the month. Please make your own backups from SourceForge because I till take that down too. If anyone wishes to take it on to handle just the Linux part, please give me a shout. Thank you for all your hard work over the years and really sorry to see this go but it's probably time to find an alternative to Skype that's localizable and OS.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 9
    JRC is an IRC bouncer. Unlike BNC, however, it primarily supports DCC sessions, and can effectively proxy them. This is useful for XDCC packets, anonymizing DCC chats, or any other use you may think of..
    Downloads: 0 This Week
    Last Update:
    See Project
  • The All-in-One Commerce Platform for Businesses - Shopify Icon
    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
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  • 10
    Diskutilo is just another Jabber Client that will suit my needs and that I write to learn about Perl and Jabber.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    The Esperanto SMS Sender is a JavaME software for sending SMS using the "x-system". The software is intended for MIDP 2.0, CLDC 1.1 compatible mobile devices such as mobile phones, smartphones, etc. Download the JAR file onto your mobile device and run
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    An OpenSource Software Release Code based on Web using PHP, JS, AJAX and others....
    Downloads: 0 This Week
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  • 13
    My standard basic user, non-subscriber project for use in verifying standard user issues.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    OSCARS (Open Source Concurrent Authoring and Realisation System) opens the doors to a whole new way of programming. Mutiple people working interactively on the same source file, each with a set of responsibilities and tasks.
    Downloads: 0 This Week
    Last Update:
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  • 15
    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
  • 16
    ZoomCloser

    ZoomCloser

    Software to prevent users from forgetting to leave a Zoom meeting.

    About Software to prevent users from forgetting to leave a Zoom meeting / meetings by monitoring the number of participants and automatically leaving the meeting when it falls below a certain level. Meeting recording and mute are also available.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    This project is an attempt to create a platform for developing LBS (LocationBasedServices) for academic research.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    A webmail-client (POP3, IMAP, SMTP) written in Java as a webapp. Very easy to install - just throw the WAR-file into the deployment-directory of your Servlet-container (tomcat, jetty, weblogic, ..) and you're ready! Test ride on the yawebmail-Homepage!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    Zeroboard is a homepage building framework based on PHP and Database(MySQL/Cubrid/Sqlite). Zeroboard provides various kinds of great features to build a web site, such as web-boards, blogs, member managing, messaging and so on.
    Downloads: 0 This Week
    Last Update:
    See Project
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