This review is for the self-hosted open source version of Tendenci. They also have hosted offerings, but we have no experience with those. Our experience with Tendenci would likely be very different if we used their hosting, relied on them for customer support, or asked them to do customization. As it is, we did everything internally. We were looking for a low-cost way to adopt an AMS system, and since most of the rest of our tech stack is free and open source, we decided to go with Tendenci.