as IBM, HP and EDS grappled with the question of how to make money selling something that started out as free.
Many open source vendors are using a combination of free and commercial licenses. They offer some products as free downloads, then charge for
proprietary enhancements. The idea is, once a customer finds the free product useful, it will want more: more functionality, support, customization.
This hybrid, known as the "both source model," is also seen by many here a way to encourage wider use and help move a company's technology toward