Protel Air is a cloud native , fully internationalized, enterprise property management system for hotels and accommodation businesses, from small independents through to global hotel groups. It provides the sophistication to manage even the most demanding hotels, locally or on a global scale.

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.