T-dah: Open Sourced Universal Webmail. Free PHP webmail application

Features at a glance Full featured webmail based on apache Complete POP3 Webmail Reader Runs under any System with PHP Running on all Windows and Linux Does not use a database or cookies Easy 5 minute installation PHP 4.4 & 5.x supported Can use a variety of skins Compatible with the MIME Standard Easily translated to any language Compatible Postfix Sendmail or QMAIL New administration section New Chat & Calendar