360cities.net specializes in 360 photos. It allows for selling and licensing images as well as various options for embedding the panoramas in other websites.
If you’re looking for a way to share 360 photos commercially, whether selling the images themselves or flexible options for embedding them in client websites, they most likely have you covered. Many of the features require a subscription fee, but the free account is suitable for non-commercial use. If you’re looking for ways to simply share your own panos, there are other good options that are less restrictive.