Open Source Communications Software

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

  • $300 in Free Credit Towards Top Cloud Services Icon
    $300 in Free Credit Towards Top Cloud Services

    Build VMs, containers, AI, databases, storage—all in one place.

    Start your project in minutes. After credits run out, 20+ products include free monthly usage. Only pay when you're ready to scale.
    Get Started
  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
    Start Free
  • 1
    RetroShare

    RetroShare

    [WARNING] Project has moved to http://github.com/Retroshare/Retroshare

    [IMPORTANT] Retroshare is now distributed on Github. Please go to http://retroshare.net to find the latest releases and sources. RetroShare is a cross-platform, secured and decentralized communication system. It lets you to securely chat, share photos, videos, and more with family and friends, using OpenPGP to authenticate peers and OpenSSL to encrypt all communication.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 2
    Open Direct Connect is a multi-protocol file sharing program that supports the protocol used by Direct Connect ( http://www.neo-modus.com/ ).
    Downloads: 21 This Week
    Last Update:
    See Project
  • 3
    Using the vCard format as the data storage structure, Rolo will keep track of your contacts and display them to you with a curses front end.
    Leader badge
    Downloads: 9 This Week
    Last Update:
    See Project
  • 4
    Java Psion Link (JPL), is intended to be a cross-platform solution for transferring files between Psion Epoc PDAs (netBook, series 7, 5Mx, revo) and any computer with a serial port and the ability to run java. As the program uses the existing Psion Link
    Downloads: 3 This Week
    Last Update:
    See Project
  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
    Try Retool free
  • 5
    bbEditor is a stand alone client for create, editing and previewing of bbCode documents. This application was created to allow the local editing/storing of documents to be eventually posted on a CMS or BB system thats supports bbCode.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 6
    OpenQueue is an open protocol for publish-and-subscribe message queuing. This enables language-independent, loosely-coupled, asynchronous communications between applications on platforms supporting TCP. Similar to MQSeries or MSMQ, but open.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7
    Friend2Friend
    F2F is an XSLT scriptable strong-encrypted XML-VM with an F2F communications framework. Installed on a webserver, an F2F servers make up a decentralised network for securely sharing of XML data and requests with friends, friends of friends, foafoaf etc.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 8
    A Java API for transparent access to instant messaging services. Currently supports AIM, MSN, and Yahoo! protocols, with more to come!!!
    Downloads: 1 This Week
    Last Update:
    See Project
  • 9
    pyPal is a jabber based chatterbot that can be used to launch commands remotely as well as to make some good conversation. It is expected to be capable of multi-language learning.
    Downloads: 1 This Week
    Last Update:
    See Project
  • Full-stack observability with actually useful AI | Grafana Cloud Icon
    Full-stack observability with actually useful AI | Grafana Cloud

    Our generous forever free tier includes the full platform, including the AI Assistant, for 3 users with 10k metrics, 50GB logs, and 50GB traces.

    Built on open standards like Prometheus and OpenTelemetry, Grafana Cloud includes Kubernetes Monitoring, Application Observability, Incident Response, plus the AI-powered Grafana Assistant. Get started with our generous free tier today.
    Create free account
  • 10
    ANet is a peer-to-peer networking protocol that implements an anonymous distributed network. With a common framework, it allows to do things similar to Gnutella, Freenet, "chat rooms", file transfer protocols, newsgroups, and so on.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Annotea Ubimarks is an application of Annotea shared bookmarks in Mozilla. It helps users to easily organize Web information by using familiar concepts, share findings with trusted peer groups and benefit from the underlying Semantic Web technologies.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    ArCoLIVE provides a set of open source component-based toolkit for multimedia applications such as chat room, Peer-to-Peer (P2P) conversation, virtual white-board, audio/video conferencing, control connection containers, screen capture and file sharing.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Communication protocol for advanced clients of talker Atlantis (now running at atlantis.talker.sk). No implementation. No source code. Only specfication.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Awarinet is an API for enabling applications to form peer-to-peer worlds. Each Awarinet client is automatically connected only to those other clients most relevant to it.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    An implementation of the Blocks Extensible Exchange Protocol (BEEP) as a Python library.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    The Cisco IP Phone Idle Display Logo Engine project or CIP IDLE A framework for displaying custom logos on Cisco IP Phones 79XX series. Also provides a Java alternative to cip2gif.exe and gif2cip.exe
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Java Command-Line Arguments Made Easy.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    The aim of the CP2PC project is to develop a minimal programming interface (API) to peer-to-peer file-sharing systems. Client side applications can be built to use this interface and thus integrate separate file-sharing networks.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    A high performance cross programming languages communication framework similar to Java RMI. Unlike RMI, CABLE allows server push and was tested to run up to 3x faster than RMI depending the number of threads and CPU power. Currently in Java and C#.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    CAXO (Component for Accessing XML based Objects) is mapping any xml based object to a multiline and editable tree structure. CAXO is a JComponent, and direct implementable in any swing container. In default configuration, CAXO is an xml browser or editor
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    A secure collaborative framework that is being used by other projects such as CFAgent (online customer service), CFWeb (pure HTTP communication for CFAgent) and much more in addition to serving as a standalone all-in-one collaboration platform by itself.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    CPO is a tool written in Java that manages newsletters. It's focused on corporate needs (privacy, scalability, bounce count, opt-in & out, newsletter statistics).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    DGHMux-Java is a Java library for multiplexing several streams over one connection such as TCP and SSL. It allows a developer to create a protocol that can be encrypted with SSL and allows firewall admins to easily allow or reject your protocol.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    DeXter is a versatile Java Internet Communication Solution based on a Plugin Architecture. Plugin highlights: Messenger - currently supporting MSN, other will follow / CSBeagle - Half-life (Counter-Strike) online player finder
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    The Distributed Computation Framework is a Java based Server/Client program for the distribution of tasks over a network of coputers.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • 5
  • Next
MongoDB Logo MongoDB