Open Source Chat Software

Fluxer is a free and open-source instant messaging and VoIP platform designed to provide communities, friend groups, and teams with a self-hostable communication alternative. The project combines real-time chat, voice calling, and community features into a unified system that can be deployed independently rather than relying on centralized proprietary services. It is built with a modern TypeScript stack and focuses on delivering a clean user experience alongside flexible infrastructure options for developers who want control over their communication environment. Fluxer supports typical messaging workflows while also aiming to provide extensibility for plugins and future integrations. Because it is open source, users can inspect, modify, and host their own instance, aligning with privacy-focused and decentralized communication trends.

This software suite is designed to extend the functionality of the Asterisk PBX through platform-independant web-client applications. Includes the VICIdial inbound/outbound contact center application. The suite is scalable across multiple Asterisk servers.

MOVED: This project has moved to https://github.com/Frug/AJAX-Chat AJAX Chat is a fully customizable web chat implemented in JavaScript, PHP and MySQL which integrates nicely with common forum systems like phpBB, MyBB, PunBB, SMF and vBulletin. A Flash and Ruby based socket connection can be used to boost performance.

Social Networking Site with all basic functionalities

Demon is a free, open source dAmn emulator that more efficiently runs on the deviantART chat protocol. Multi-threading/queuing is strategically used for performance and reduction of lag.

Dude is a friendly learning chatterbot with XMPP support.

JuliaClient is a web-browser based client for Open Simulator. The project consists of two parts, a full serverside REST implementation granting access to the functionality of both grid and simulator servers and a WebGL based client, requiring no pre-installed components.

New Age ++ is a project that focuses on general programming and has many ideas in mind. Most possible one is a new encrypted P2P network to share files like videos, music, software. etc and possible support for networks like Gnutella or Napster.

A 3-Tier Web 2.0 application written in PHP with CodeIgniter and MySQL, and the web interface in XHTML/CSS with JavaScript/JQuery. A multifaceted communication and information system to support collaboration between advanced technical users.

TikeIRCd is a IRC daemon written in perl. It is based off of the long deceased perl-ircd (here on Sourceforge) and is compliant with the TS6 protocol.

iBot is an open source IRC chat bot, written in Python. It's only for funny comments in chat rooms, not for filesharing!