Adobe now only provides downloads for Creative Cloud versions and recent editions of Photoshop Elements . System Requirements for Mac OS X 10.4.11
Approximately 2GB of available hard-disk space for the application alone.
If you are looking for a way to use Photoshop on an older system like Mac OS X 10.4.11, The Status of Photoshop CS3 Downloads
Adobe now only provides downloads for Creative Cloud versions and recent editions of Photoshop Elements . System Requirements for Mac OS X 10.4.11
Approximately 2GB of available hard-disk space for the application alone. free download adobe photoshop cs3 for mac os x 10411 97 link
If you are looking for a way to use Photoshop on an older system like Mac OS X 10.4.11, The Status of Photoshop CS3 Downloads Adobe now only provides downloads for Creative Cloud