Recommended and mentioned products
Online photo editor, which can work with PSD, XCF and Sketch files (Photoshop, Gimp and Sketch App).
Ninite is the easiest way to install software.
I recommend ninite.com for more free software and one installer/ updater without any hidden extra apps. Gimp and Inkscape are there.
Free and open-source, full-featured video editor.
Kdenlive is an awesome free video editor, I highly recommend it.