Photoshop is picture editor,what you mean?good picture editor?best free picture editors are GIMP and Picasa,i recommend to you Picasa
At work, I often use GIMP image editor. It's an open source image editor which has many functions similar to Photoshop. Download it for free
yes check out photoshop mobile (PS mobile) its free and works great!
Photoshop online does have small fees associated with the usage of the program however you can download the free trial but will not have all the options as the paid program. You can easily use Photoshop Online version at toolpic.com in free of cost and if you are not pro it can be best editor for you
Gimp is a free image editor that can make animated .gif files just like Photoshop, which is a professional grade (and expensive) image editor program.
It depends on whether if you are looking for a specific one. I would recommend GIMP at gimp.org It's a free Photoshop alternative and it may seem rather complicated for a beginner. If you are searching for a easier-to-use editor I suggest that you choose Free Picture Editor below.
One very good free alternative to Photoshop is Gimp. There is also Gimp Shop that is a Gimp that looks similar to Photoshop.
The main professional image editor is Adobe Photoshop. Paint Shop Pro is a more affordable program that aims to do everything Photoshop does. In the open source world, the standard image editor is called The Gimp.
The most useful editor in my opinion would be GIMP, since it is similar to Photoshop, but is free. In both software's, you are able to do all the things you mentioned, and more! You can even change the lighting, and color, etc.
photoshop cs3
Adobe Photoshop CS5
Yes. Most, if all profesionalls use it. But in terms of consumers, Gimp is also popular, because of It's free licence and the fact that not everyone can afford Photoshop. Which one will you choose depends on how much can you afford. Personaly I use Photoshop.
I think that no computer comes with such kind of software included in it. But there are many portable image editors as good as photoshop. What does it matter is your skill to manage image editors. A normal image editor may become a great tool if you want to develop your skills to edit pictures.