Inkscape is a free and open-source vector graphics editor software.

Karbon is a vector graphics editor.

Autodesk Graphic is a powerful full-featured design and illustration application.

Seashore is an open source image editor for Mac OS X's Cocoa framework. It features gradients, textures and anti-aliasing for both text and brush strokes.

Boxy SVG is a vector graphics editor.

JessyInk is a collection of JavaScript snippets that can be incorporated into an SVG image to turn the image into a presentation when opened in a browser.