Which WSD software packages are there?

By the mid-1980s WordStar was the most popular word processing software in the world. But IBM dominated the "dedicated word processor" market with its "DisplayWrite" application, which ran on machines dedicated to writing and editing documents. There were many dedicated word processing machines at the time, but IBM's main competition was Wang Laboratories. Such machines were expensive and were generally accessed through terminals connected to central mainframe or midrange computers.