Inkscape, an excellent open source SVG editor with capabilities similar to commercial programs like Illustrator, CorelDraw, Visio, etc.
Inkscape supports SVG features include basic shapes, paths, text, alpha blending, transforms, gradients, node editing, svg-to-png export, grouping, and more. Its main motivation is to provide the Open Source community with a fully XML, SVG, and CSS2 compliant SVG drawing tool.
Compatible: Windows, Mac Os X, Linux. Download: 27,28 Mbytes.
Link: download open source Graphic Editor Inkscape.