from Adobe. Because the activation servers for Creative Suite 3 (CS3) were permanently shut down in 2017, even users who own the original discs can no longer activate the software on new or existing machines. Critical Availability & Compatibility Information Is Photoshop CS3 Completely gone/discontinued? | Community
Adobe Photoshop CS3 is considered "End of Life" software and is no longer available for free or legal download Free Download Adobe Photoshop Cs3 For Mac Os X 10.4.11 97
from Adobe. Because the activation servers for Creative Suite 3 (CS3) were permanently shut down in 2017, even users who own the original discs can no longer activate the software on new or existing machines. Critical Availability & Compatibility Information Is Photoshop CS3 Completely gone/discontinued? | Community
Adobe Photoshop CS3 is considered "End of Life" software and is no longer available for free or legal download