what Texture Websites can be used on the market place?

Hi i am wondering for commercial use

what Texture websites can be used on the market place?

I need a list of web sights that are approved by epic them self’s so i can use for later reference.

in need of reply asap. thanks guys.

None, unless you have written/contractual permission to use them.
So, make your own.

What about Photoshop CS since i have commercial edition of photoshop?.
im after some flower images that are commercial for my vases.

If you make them yourself or use anything inside photoshop that should be fine.
Though, I am not a lawyer and do not know all the rules.
When in doubt, ask around. When its related to legal stuff, why not ask the marketplace team directly.
(this would be a question better asked on the ue4 forums)