The Transportable Applications Environment (TAE) is a system that combines different programs into one easy-to-use package for system developers. It simplifies the process of building systems by providing a stable framework and integrating system activities. TAE works with the operating system to schedule tasks and handle input/output functions. Initially, TAE supported basic interfaces like commands and menus, data displays, and error reporting. Recent updates now include support for graphics workstations with a user-friendly window-based interface.