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Photoshop 1.0.1 goes free, 23 years after launch

Adobe releases source code for original Photoshop

The original version of Photoshop is now available for free – 23 years after it was first launched.

According to The Next Web, the Photoshop 1.0.1 source code has been made available via the Computer History Museum website.

The code was first created by Photoshop’s co-founder Thomas Knoll, who was a PhD student at the University of Michigan and his brother John, who worked at Industrial Light and Magic.

It was originally called Display but the name was changed to Photoshop before being licensed to Adobe in 1989.

“All the code is here with the exception of the MacApp applications library that was licensed from Apple,” read the statement from the Computer History Museum.

“There are 179 files in the zipped folder, comprising about 128,000 lines of mostly uncommented but well-structured code. By line count, about 75 per cent of the code is in Pascal, about 15 per cent is in 68000 assembler language, and the rest is data of various sorts.”

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