After the brothers struck a deal with Adobe their product saw an additional ten months of development time.

Finally, in February of 1990 version 1.0 of Photoshop was ready and launched exclusively for the Macintosh. It quickly defined what an image editing program should be - an impressive feat considering it only featured four named programmers on its splash screen, a stark contrast to today.

If you want to see the very first version of Photoshop in action, but with a modern twist, then .