Grammatik was the first grammar checking program developed for home computer systems.
Aspen Software of Albuquerque, NM, released the earliest version of this diction and style checker for personal computers.
Reference Software International of San Francisco, California, acquired Grammatik in 1985.
Development of Grammatik continued, and it became an actual grammar checker that could detect writing errors beyond simple style checking.
[3] Subsequent versions were released for the MS-DOS, Windows, Macintosh and Unix platforms.