Hey there,

@Red Shirt:
The second picture you have linked reminds me of a simplified pictogram used to display viruses; but I don't say that this is the meaning in this context.

About your request:

I don'T know for sure, but you might want to look at the programm GIMP. It is open source or at least available for free; and it is available for a variety of different operating systems. I use it to modify my avatars I use on different internet forums, and sometimes for more serious sh*t. But I haven't got into it deeply. What I often here is that it is supposed to be comparable with Photshop. So maybe you want to look at it and try it.
But I warn you: One time I tried to use Photoshop while being used to GIMP; and both programs work very different; so you have to put some effort into GIMP in order to grab its concepts and understand the linking between its functions and features:
www.gimp.org

Best wishes!
Liam