Inkscape – Open Source Vector Graphics Editor
http://www.inkscape.org/

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. We also aim to maintain a thriving user and developer community by using open, community-oriented development. This has been added to the tools section of Research Resources Subject Trace™ Information Blog. This has been added to World Wide Web Reference Subject Tracer™ Information Blog.