GNU Image Manipulation Program (GIMP) is the longtime open-source photo editing alternative to Adobe’s category-leading Photoshop. It includes many powerful Photoshop-like capabilities, such as layers ...

Maybe one free, open-source app can't replace Photoshop, but these three used together can for—at least for 90% of users.

For a project I was recently working on I needed to remove the white background from several hundred images in PNG format and replace it with transparency. I know you can automate Photoshop but that’s ...