Preno is a hotel software company that offers cloud solutions for independent hoteliers - offering a PMS, Channel Manager and Booking Engine. Preno is built for hoteliers by hoteliers. Preno is a simple, powerful property management system designed for accommodation providers.

Cassandra is a free and open-source, distributed, wide-column store, NoSQL database management system designed to handle large amounts of data across many commodity servers, providing high availability with no single point of failure.