Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X, using the W3C standard Scalable Vector Graphics (SVG) file format.
Inkscape supports many advanced SVG features (markers, clones, alpha blending, etc.) and great care is taken in designing a streamlined interface.
It is very easy to edit nodes, perform complex path operations, trace bitmaps and much more.
Main Features:
The path changing modes of the new Tweak tool allow you to push, shrink, grow, attract, repel, or roughen any path, easily and naturally sculpting exciting freeform shapes. This is a lot more convenient than the Node tool not only because you don't need to think about nodes, but also because it can work on any number of selected paths at the same time.
The color changing modes of the new Tweak tool, paint and jitter, are very similar to the way a soft brush works in a bitmap editor. If you have a number of separate objects, you can select them all and paint over them with any fill or stroke color.
the application comes with a selection of stock patterns, accessible via the Fill and Stroke dialog. It is now much easier and faster than before to fill a path with stripes, checkerboard, or polka dots.
The Paint Bucket tool works just like the Paint Bucket tool in bitmap image editors -- clicking in an area fills the area with the chosen color. Unlike other editors, the Inkscape tool features some additional fill methods to help you finish your work faster.