iJab is an Ajax-based web based instant messaging program for XMPP/Jabber. It is free software and users can run their own instant messaging without limitations or software cost, complimenting the XMPP philosophy of a distributed network. iJab is interpreted purely by the client webbrowser. It runs solely in a browser and does not require downloading or installation of additional software. iJab also developed iJabBar, a Facebook styled web chat client.