Wing Pro requires a separate license for each developer working with the product, or a site license configured for the licensed number of users. For the end user license agreement, see the Software License.
To run for more than 10 minutes, Wing Pro requires activation of a time-limited trial or permanent purchased license. Time-limited trials last for 10 days and can be renewed two times, for a total or 30 days.
Purchased licenses come with ten activations per year by default and additional activations can be obtained from the self-serve license manager or by emailing sales at wingware.com. As a fall-back in cases of emergency where we cannot be contacted and you don't have an activation, Wing Pro will run for 10 minutes at a time without any license at all, or a trial license can be used until any license problem is resolved.
See Installing Your License for more information on activating licenses.