DrawBerry provides all the same features of commercial applications such as Adobe Illustrator or Inkscape; except in a free, easy to use, lightweight, and powerful application which is also open-source.
With layers, powerful tools, inspectors and workspaces, DrawBerry is a complete and easy-to-use drawing solution. Moreover, CoreImage filters, based on a great Apple technology, offer you new ways to improve your drawing, extending possibilities. More Info »
Some even more great features like the magnifying glass or the undo history, will help you to draw more and more accurately.