RetroShare – Open Source private peer to peer file sharing and communication platform
RetroShare is an Open source cross-platform, private and secure peer to peer file sharing and decentralized communication platform, where User can securely chat and share files with your friends and family, using a web-of-trust to authenticate peers and OpenSSL to encrypt all your communication.
JsChat – Open source Chat system based on JSON protocol
JsChat is an simple Open source real-time chat system based on JSON protocol and It’s built with Ruby and Sinatra (Sinatra is a tiny Ruby web framework).
ChoqoK – KDE Micro-Blogging Client
Choqok is a Free and Open Source fast, efficient and easy to use micro-blogging client for K Desktop Environment for the Social networking sites like Twitter, Identica .
StatusNet – open source micro blogging platform
StatusNet is an Open source micro blogging platform that gives you Twitter-like functionality which helps you to share and connect in real-time within your own domain.
Kopete – multi-protocol Chat server
Kopete is a flexible and extendable multiple protocol instant messaging system designed as a plugin-based instant messaging system suitable for personal and enterprise use.
openmeetings – Open-Source browser based Web Conferencing tool
openmeetings is a free, open source browser based customizable web conferencing and collaboration tool that allow you to set up instantly a conference in the Web.
Tokbox – browser-based free video chat and video messaging service
Tokbox is a free browser based video chat and video messaging service where user can easily chat with up to twenty peoples, customers or friends at once without download any software.
BigBlueButton – open source video conferencing tool
BigBlueButton is an open source video/web conferencing tool that mainly focus on usability, modularity, and clean design — both for the user and the developer.
Mia-Chat – web based Ajax chat application
Mia-Chat is a web based Ajax enabled chat application developed with JavaScript & PHP which is very easy to use and simple to setup. Mia-Chat supported to Database platform agnostic .
Voodoo chat – PHP based stream chat engine
Voodoo chat is a PHP based highly customized stream chat engine that specially designed to work on high-loaded chat-servers.
