Sketsa

Sketsa is a cross platform vector drawing application based on SVG. Scalable Vector Graphics (SVG) is a graphics format and technology based on XML developed by W3C. With Sketsa, you can create vector graphics that can be scaled and printed at any resolution, without losing detail or clarity. You also can get instant visual feedback on what you changed.
Sketsa features various tools for optimizing content creation, giving designers unsurpassed support for creativity. This tools include property palette, source editor, resources editor, SVG specific shape tools, transformation tools, and additional illustration tools. It uses SVG as a native file format.