Portosic OS X

The Portosic OS X was released in 2006 by Theorysonic.

Features

 * Touchscreen capability.
 * New notifications center.
 * Improved networking and performance.
 * Ability to play 720p HD videos, with limited 1080p Full HD support.
 * Revamped UI style.
 * On-screen touch keyboard.
 * Added support for TheoryTablet.
 * It is the last version to support TheoryPhone III.