Some of the old software before 2010 may not be able to install/run normally on x64 or Windows 10 systems. Be aware of it before purchasing it.
Photoshop is undeniably the most powerful image-editing tool west of print production
Photoshop 4.0 codename: Big Electric Cat
Photoshop 4.0 introduced adjustment layers and actions, allowing users to perform non-destructive image adjustments and automate many tasks.
This release adds PNG support and is the last version that runs under Windows 3.1 with Win32s.