Invisionix Systems announced this month the pre-alpha release of a portable Instant Messenger (IRSIM), which boasts to be the only one of its kind using PHP, Javascript, mySQL, and multi-transport jabber technologies. It features mySQL DB message buffering, multiple user logins, local user registration, IM contact list, and message input/output windows. It can run on run on any host system such as Unix, Windows, or Mac, which run PHP and mySQL.