http://www.inkscape.org/
About Inkscape
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.
Programs for work with vector graphics Adobe Illustrator, Corel Draw, Freehand, AutoSketch, OpenOffice Draw
1) Inkscape
2) sK1
3) Sodipodi.
4) xfig.
5) Sketch.
6) Karbon14 and Kontour.
7) OpenOffice Draw.
8) Dia.
9) Tgif.
10) Gestalter.
11) ImPress.
12) Tkpaint.
13) Tgif.
14) Corel Draw 9. [Prop]