AcidIM is an Instant Messenger application written in CGI-Perl.
Archangel lets you browse RGTP bulletin boards (such as GROGGS at Cambridge University) from within Mozilla. The protocol Archangel uses is secure, centralised, linear, and mature.
bingo chat is a modular chat system for bingo eV. (http://www.bingo-ev.de). It is inspired by irc and many others.
CGICQ is a modification of icqtech that allows CGI input to be sent to a configurable UIN.
CommunicationTube is a free web messenger chat client for the IM (instant messaging): Windows Live Messenger, Google Talk (GTalk), ICQ, and IRC.
Covide is a Web-based communication suite. It is designed to manage all communication in a company or group of people that work together on one or more projects/tasks. It includes CRM, HRM, and all kinds of information management features.
Gordano Messaging Suite
(commercial) The Gordano Messaging Suite (GMS) is a flexible and reliable suite of messaging products. Customers can choose which components meet their needs from email, Webmail, collaboration, instant messaging, calendaring, SMS, and list server software all of which can be complimented by high level anti-spam, anti-virus, and archiving options.
gotGaim is a web based Gaim log reader and synchronisation system. It gives you an easy to use web page to view your Gaim logs and also provides a method to synchronise Gaim logs from multiple computers into one easy to access place.
Greptweet is a minimalistic Web application to download Tweets of a given username for searching with grep.
Manhattan Virtual Classroom
The Manhattan Virtual Classroom is a fast, stable and effective course management system that runs on Linux and other Unix-like systems. It's written entirely in the C programming language (fast! - light hardware requirements) and is 100% database-free (no MySQL administration, no tuning issues- simple!)
MMS Decoder can receive MMS messages, decode them, and display them on a Web page.
ShoutChat is a PHP script, released under the LGPL license, which gives developers the capability to add an instant messaging module to their web sites. It uses an early version of AJAX (long before the hype), and will operate in most modern browsers. By using this tool, simultaneous web site visitors are able to chat with one another, in real time, without any prior arrangements. Example uses include web sites for weblogs, projects and discussion boards.
phpChrystal is an OpenSource-Intranetsystem which is designed to be used at Lan-Partys. Advantages of phpChrystal are its portability, flexibility and performance, since it is completely based on PHP, MySQL and XML.
PlaySMS is a flexible Web-based Mobile Portal System that it can be made to fit to various services such as an SMS gateway, personal messaging systems, and corporate and group communication tools.
Rau-Tu Question and Answer System
The Rau-Tu aims to enable a team of collaborators to answer questions posted by any person in a Web site, covering various fields of knowledge. For more details please see the description of the system.
ShoutChat is a PHP script, released under the LGPL license, which gives developers the capability to add an instant messaging module to their web sites. It uses an early version of AJAX (long before the hype), and will operate in most modern browsers.
The THCNET Message System is a customizable PHP-enabled Web application which provides a moderated message system using a backend MySQL database.
Yafumato Web Messenger
Yafumato Web Messenger is a Web-based instant messenger client. Users can connect to supported instant messenger services using only a Web browser via HTTP (or HTTPS). The Yafumato server connects to the messengers by proxy and provides the Web interface to the user, allowing instant messaging from computers where a desktop client cannot be used. It is currently alpha software; as such, it has minimal error handling and is not feature complete.
Yalst ("yet another live support tool") is a powerful chatting tool that integrates easily with any Web site.
Zadolbator is a simple reminder component for Jabber server. As it is installed on the server side, it can be used by all users of this Jabber server, and does not depend on the client software used. Its main purpose is to remind you about events such as birthdays or holidays, though it can be used also for keeping your everyday reminders about meetings, things to do, etc.