Photoshop 1.0 source code released and available for free download



The source code for Adobe Photoshop 1.0 has been made publicly available for free download at

the Computer History Museum . Photoshop was developed in 1987 by Thomas Knoll, who was a university student at the time, and was shown to Apple and Adobe, who acquired the license and released version 1.0 in 1990. Although it was created more than 20 years ago, it is now possible to view 179 files totaling 128,000 lines used in version 1.0.1.

Computer History Museum | @CHM : Adobe Photoshop Source Code
https://computerhistory.org/blog/adobe-photoshop-source-code/



This is the developer, Thomas Knoll. He said that he originally created Photoshop not for work or to make money, but for his hobby of editing photos.



His younger brother,

John Knoll , also participated in the development.



Below is Photoshop 1.0 for Macintosh Plus, released on floppy disk in 1990. At the time, it was mainly for Mac, and the Microsoft Windows version was released from version 2.5.



This is version 1.0.7. Unlike the current version, a realistic eye is used as the logo .



Here's what the home screen looks like, with some familiar tools on the left:



A screen for selecting brush color and size.



Features such as range selection and filters were also available at this time.



Change settings.



Font style is selected by checking a check box.



To download the source code, first click on 'Photoshop version 1.0.1 Source Code.'



Then, 11 license terms are displayed.



Once you agree to the license, click 'I ACCEPT'. This will start the download of the ZIP file.



Commercial use is prohibited.

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