InsightPoint is a tool for creating vector graphics and complex images that is completely free, perfectly combining all the necessary qualities to be considered a powerful competitor for current scalable vector graphic (SVG) editors.
It's so great because it's so simple. It has an attractive, orderly interface with a good amount of tools and information about the current image you're working on. You'll be surprised at how easy it is to use each tool.
If you're looking for a powerful vector graphics editor that is also free and easy to use, InsightPoint is a good option to start with.