Monetas
Monetas is the commercial enterprise-class platform built on the Open-Transactions library.
Monetas was founded by Chris Odom and Johann Gevers in order to bring the benefits of Open-Transactions to the world.
Monetas is the major supporter of Open-Transactions development, and spends significant financial and human resources on developing OT, and will continue to fund OT as a high-quality commercial-grade open-source platform, just like Red Hat funds development of Linux, and Google funds development of Android.
Official site: http://monetas.net