Please note that "Portable" versions of software are unauthorized modifications of the original commercial software. Using such software may violate Adobe's Terms of Service and licensing agreements. Additionally, portable executables downloaded from unverified sources may pose security risks. This text is drafted for descriptive purposes only.
If you for CS6 (purchased before Adobe moved to Creative Cloud), you can: Adobe Photoshop Portable CS6 13.1 -x32 X64- Multi
Standard installations add hundreds of registry entries. Over time, this slows down Windows. A portable app leaves zero registry keys behind. It is a "green" software. Please note that "Portable" versions of software are