Pinta can edit your images, it is a small, easy to use application specially designed to offer you a drawing / editing program modeled after Paint.NET.
Its goal is to provide users with a simple yet powerful way to draw and manipulate images.
Features:
1. Drawing Tools:
Use easy drawing tools to draw freehand, lines, rectangles, ellipses, and more.

2. Unlimited Layers:
Use layers to help separate and group elements of your image for easy editing.

3. Multiple Layers
Bi-Tri-Quad-Lingual:

4. Use Pinta in your language. Pinta is at least partially translated into over 40 languages.
Full History:

5. Dont be afraid to experiment, Pinta tracks your full history so you can always undo.
Adjustments and Effects:

6. Pinta includes over 35 adjustments and effects for tweaking your images.
Your Workspace:

7. Like docked Windows No problem. Floating Windows No problem. Pinta will even let you mix and match.

Requirements:
* Gtk#

The license of this software is Freeware, you can free download and free use this graphing software.