Don't simply try to duplicate the functions of the competition. Offer better value. Find one, two, or three things that the competition doesn't do or doesn't do well...things that cause the user pain. Then, do those things better than the competition...and do them well.

You can also offer more features, better price, better service.

>We developped an application for a vertical market.
>
>There's an already established competition in that market. Though we know that our application is better than theirs <g>.
>
>What should we do to become succesfull with our product?
>
>What would be the best strategies?
>
>Every comment is welcome.