Developer: Inkscape Team
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.
While neither the Inkscape team nor Puget Systems charges for the installation and use of this software, we do encourage you to make a donation to the developers if you find Inkscape useful. You can do so by following the directions on the Inkscape donation page.