Forget about Windows, the Linux OS provides amazing opportunities for creativity when it comes to computer aided designs applications and implementations. But, as a designer trying to experiment with ideas or striving to come out with a unique result, you are tempted to try out free CAD software which you can easily download and start making use of. But there are many of this software all over the places, many of which are not very easy to understand. To make things easier for you, here are six of the very best free CAD programs that are Linux based.