Browse free open source Java Chat Software and projects below. Use the toggles on the left to filter open source Java Chat 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

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
    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
    This project is a try of implementing Java Messages Systems on Java 2 Micro Edition. The project consists of a few parts: - a library for mobiles, implementing most of JMS methods - a proxy serwer, running on J2SE, communicating with queues provider
    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    Opensource peer-to-peer Chat application based on JXTA framework (https://jxta.dev.java.net/) from AtexSoft Company (http://www.atexsoft.com).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    The Jabber bot service provides two functions, first it can run plugins at scheduled intervals and send notifications to the desired jabber account (including GTalk), second it can run plugins when given the name and reply with the output from the pl
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    A full RFC-1459 Compliant IRC daemon with integrated IRC Services
    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
    A Library for communicating with the Jabber Instant messaging system from either Java 2 Standard Edition or Micro Edition.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    The goal of this project is to create a new peer-to-peer system that is capable of supporting instant messaging, encryption, and secure sharing.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    Server/client chat environment that allows a client to send a message or file to another client on the server. If the other client is not currently on the server, the server will save the file or message for that client to retrieve later on.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    JetClass, Java net-class application, allows virtual lectures to be held by teachers and students located in front of their computers, somewhere around the globe. It's written in Pure Java, relying on CORBA for network communications.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9

    MUSCLE

    Client-server networking library

    The MUSCLE system is a fast, portable, flexible client-server system for distributed applications. Clients send BMessage-like PortableMessages to each other either directly or via a centralized server (with built-in database and 'live query' support).
    Downloads: 0 This Week
    Last Update:
    See Project
  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure 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
    Messa is a fully distributed instant messaging and presence application.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Moonbeam is a xml socket server written in java. It’s primary use is targeted on building multi user applications - anything that reaches from chat rooms, over games to instant messengers.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    MultiJADS is a domain independent multiagent active design documents shell. It uses multiagent technology to support activities in concurrent and distributed design systems and is based on the Active Design Documents (ADD) approach.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Free and Easy to use tool for scientists to manage the references of their work. Automated Fulltext retrieval from the Open Repositories. Flexible Metadata Model and tranformation of metadata to different standard models. nice print formats of the metada
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    MySXP Client: Is an ActiveX COM Microsoft Windows platform; The objective of this Component is to create a terminal service for a wide open server services as, IM, RPC for client app., RPC, DB terminal, Multiplayer Game client, WebCam, voIP Client.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Phosphor is a peer-to-peer file sharing program. XML network protocol, with source in Java and Swing. Uses thread pools extensively and is designed to scale very well. Chat capabilities. This is Napster done right!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    Profile Pal will help you synchronize your profiles amongst different communities like ICQ, Microsoft Live, Facebook, etc. It is plugin based and meant to be accessed as servlet on tomcat. Use this to keep all your pfoiles in sync.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    An Eclipse Plugin to achieve distributed pair programming on the internet, it is based on open sourced Syncshare server. This plugin will finally make XP possible b/w distributed teams.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    This project makes it easier for teachers to do their class. It allows teachers to use software at their home and upload it on a website, from their home or school computer. Allowing parents and/or students to see their marks, and everything else.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    Project c2h - cetacean to human - building Seadragon, a tool for the scientific research of the acoustic communication of cetaceans, supporting the creation, emission, and recognition of underwater whistles. The blog: http://leafyseadragon.blogspot.com/
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    SimpleXDCC is an intuitive xdcc download manager. It lets you simply join a desired server/channel and begin making xdcc bot requests. Ideal for people who wish to download multiple files without having to type a lot of xdcc send commands.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    A Java IRC network implementation. The idea is to follow the specification on IRC RFCs and to build a webchat network on a J2EE architecture.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    The software is a LAN chat client/server with file transfer support and a remote control feature (like in Windows/MSN Messenger).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    Lots of small projects: games, VST plugins, experimental IRC server, ROM hacking tools, net tools, font tools, html tools, etc. Browse CVS!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    This java, platform-independent application allows users to share files across the internet.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    aLinux v15.0
    Inspiring Operating System replaces Windows 8, Vista, XP and Mac OS X. (Are you tired of nasty viruses, worms, trojans, rootkits, dialers, spyware, and malware?). If so, make a smart move and get a newbie friendly free Linux Operating System today!
    Downloads: 0 This Week
    Last Update:
    See Project