Increasingly web application developers and entrepreneurs are turning to the “Software As A Service” (SaaS) model to monetize their products. Together with this growth has come the need for reliable recurring billing systems and in turn a number of enterprising folks have built said solutions and fittingly used the SaaS model to monetize their efforts.
ThinkVitamin has written a really nice article: Recurring Billing For Web Apps, we will look at how these services work, why you’d want to use them, the various options available, and how they differ from one another. It should give you a better idea of which service is right for you and how you plan to use it.
Source: Recurring Billing For Web Apps