OPTIMAL is primarily written in PHP, and uses a mySQL database for data storage. Javascript is used for forms validation and controls management.

The OPTIMAL user interface was designed to require a minimum of work by users. Time calculations, offsets, and 'housekeeping' functions are done automatically for you.

OPTIMAL was designed from the start to be accessible with virtually any browser and operating system. OPTIMAL adheres to the HTML 4.0 specification for all screen output (with minor exceptions where required).