Yes EQ6 can be used without internet. I know from personal experience that having you EQ (whatever version) on a laptop or any "dedicated" computer is a good idea because you won't have to wait to design when the mood strikes. Also, having it on a laptop that you can take with you to a class is great, especially when you need to re-size / re-design a project because you've made a cutting error. Ask me how I know that one. :-)