Where can one download free Photoshop software?

You can download a free fully-functional 30-day trial of Adobe Photoshop Cloud or Creative Cloud from the official Adobe website. After that, you have to pay a membership fee.

There are other software applications that can perform the same function as Photoshop. Gimp is one of the more popular version. It is downloadable, free and open-source software, available for Microsoft Windows, linux, and MACos.