Browse free open source Messaging platforms and projects below. Use the toggles on the left to filter open source Messaging platforms 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

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
    Start Free
  • 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.
    Sign up for free
  • 1

    AndroidLANChat

    decentral messaging system for Android within LAN

    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    AJIM is a pure JAVA instant messenger software. It uses the Smack API for the XMPP (Jabber) protocol.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3

    Azonto Messenger

    Cross-Platform Mobile Messaging Application

    Azonto is a Cross-Platform Mobile Messaging Application that allows users to share images, songs, videos, create and add each other to groups. It is for the trendy who wants to be on top of the mobile messaging game.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    A secure alternative to the BlackBerry Messenger.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 5
    Borsuk is a gtkmm2 based maths and physics instant messenger using jabber protocol. It sends data in XML (MathML, SVG) so it can be easily reused i.e. as a webpage. Integrated editor for maths formulas and graphics helps creating data i.e. rewriting it.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    CURD is GTK+ Instant Messenger
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    CIM. Console Instant Messenger. It is developing in micq style and combine jabber and icq clients.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    The goal of CryptoJIM project is to create a cross platform instant messenger with support for a central encrypted message archive, transparent message encryption and several IM Protocols. At first priority it will support the ICQ Protocol.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    An Instant Messenger client for the Enlightenment 0.17 window manager
    Downloads: 0 This Week
    Last Update:
    See Project
  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 10
    Fama Instant Messenger (Fama IM) is a multi platform multi protocol instant messenger client. Only the most basic features are built in, but powerful plugin system makes Fama IM very flexible.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    HDCIM is an instant messenger for HDC users to exchange info, the IMs will travel encrypted with public key encryptions technologies. The instant messenger will be built for Windows and Linux, but it will be written for maximim portability
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    This is a Java-based project to integrate IM services (MSN, Yahoo, AOL, ICQ, Jabber) into a server-based proxy service, providing always-on presence and offline message queing. Any Jabber-based client can receive messages from the service.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    IPMessenger-wq

    IPMessenger-wq

    IPMessenger

    IP Messenger: 1. communication between People who works on computer. 2. communicate one to one. 3. u can send text or other files by this tool. 4. based on .Net PlatForm with WPF UIElement.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    InkDrop is a lightweight Jabber instant messenger with a clean user interface.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Now,here's the work going on a better,easier INSTANT MESSENGER that allows users to communicate with each other,it allows to communicate with existing yahoo and MSN messenger users.along with that it aims to provide excellent audio and video data exchang
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    Island is a Serverless LAN Based Instant Messaging Tool that reaches anyone in the same subnet by using TCP/IP broadcast notifications. There is no need to add contacts since all of them are there.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    JIMO(Java-based Instant Messenger One), supports multiple protocols via services, including AIM, MSN, Yahoo, IRC. It is flexible through its plugin architecture, with an intelligent agent, Chatbot.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    The Java (All-in-one) Instant Messenger
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    Low Bit-Rate Instant Messenger for Voice and Text using SIP and XMPP.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    LANCast IM will be a local area network(LAN) instant messaging software inspired by the AChat protocol. The project only at a planning stage, but things should move and coding should start this autumn
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    LameMessenger is a multiple-protocol Instant Messenger client written in Java.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22

    LibreTalk

    P2P instant messenger

    P2P instant messenger, featured centerless, free and secure.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    Loki, the Python Instant Messenger, is an open source, multi-protocol, instant messaging client written in the python language.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    Meow Messenger is a multi-protocol cross platform chat program designed for coders
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    Instant Messenger on CORBA.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • Next