PC Paintbrush

PC Paintbrush is a created by the ZSoft Corporation in 1984 for computers running the MS-DOSoperating system.

Published alongside Microsoft Mouse DOS drivers version 4 from 1985 as a direct response to Mouse Systems bundling PCPaint with its mice, millions of copies were sold, and the program itself ended up licensed and used inside Windows 1.0, as Microsoft Paint; with an updated version licensed again for Windows 3.0, which (in an updated state) is still included in Windows today.