Drawing

Google SketchUp is software that you can use to create, modify and share 3-D models. http://sketchup.google.com/
 * Google SketchUp (free software)**

An Open Source vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X. http://www.inkscape.org/
 * Inkscape** **(free software)**

An Open Source drawing program for young children with sound effects, a cartoon character, and fun rubber stamp/stickerbook pictures. http://www.tuxpaint.org/
 * Tux Paint** **(free software)**