CEO (Comprehensive Electronic Office) Office software from Data General was introduced in 1981. It included word processing, e-mail, spreadsheets, business graphics and desktop accessories. The software was developed mostly in PL/I on and for the AOS and AOS/VS operating systems.

It included a main program known as the Control Program which offered a menu driven interface on the assorted dumb terminals which existed at the time. The Control Program communicated with separate "Services" like the Mail Server, Calendar Server, File Server (for documents). There was also a Word Processor and a data management program which was also accessible from the Control Program.

In later years, CEO offerings grew to include various products to connect to CEO from early personal computers. The first such product was called CEO Connection. Later a product named CEO Object Office shipped which repackaged HP New Wave (an object oriented graphical interface)