code – Old School Computer

Adobe Photoshop Source Code

Dec 21 2025

Photoshop Origins:
Thomas and John Knoll developed an image editing program in the late 1980s called “Display,” which became “Photoshop.” Adobe licensed it in 1989, leading to its commercial release in 1990. The source code for version 1.0.1, primarily in Pascal, is now available for non-commercial use, showcasing its architectural sophistication and historical significance in software development.

https://computerhistory.org/blog/adobe-photoshop-source-code/

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Adobe Photoshop 1.0 Source Code Now Available

code, history, software

Dec 20 2025

Adobe Photoshop 1.0 source code released by Computer History Museum with Adobe’s permission. Contains 179 files, 128,000 lines of code, mostly in Pascal. Lacks MacApp library code from Apple. Significance lies in its educational value for software development.

https://sixcolors.com/link/2025/12/adobe-photoshop-1-0-source-code-now-available/

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Fully Documented Source Code for Elite on the 6502 (BBC Micro, Acorn Electron, Commodore 64, Apple II, NES)

code, game

Feb 3 2025

Fully documented 6502 source code for Elite (1984) online, covering BBC Micro, Acorn Electron, Commodore 64, Apple II, and NES. Includes original code, deep dives, hacks, and options to play or explore. GitHub repositories available for building source code versions. Educational site aims to appreciate the game’s legacy.

https://elite.bbcelite.com/

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