Open Source AJAX based Instant Messenger

Instant messaging is all set to overtake email as the numero uno application on the Internet and there are plenty of Instant Messaging solutions that can be installed on your own private network inside your company for secure internal Instant Messaging and collaboration. However, most solutions need to be installed on the local PC and that becomes a problem for roaming users. While a few products also support web access the experience is far from ideal. I came across AjaxIM (http://www.ajaxim.com/) that is a pure Browser based Instant Messenger application using AJAX technologies to mimic almost desktop-like user experience. While it is low on features, the solution is Open Source (PHP and AJAX) and you are free to add whatever functionality that you need. Try a demo at: http://www.ajaxim.net/ (Username: test, password: test).