ScyllaDB is an Israeli startup company founded in January 2013 as Cloudius Systems, now employing 25 people. Our team is highly distributed, located in Israel, Europe (Poland, Sweden, Finland, Spain, England), the Americas (Brazil, USA, Canada) and Asia (China, Japan), each picked for world-class expertise in writing operating systems, hypervisors, and related software. Our primary interest in ScylladDB is to develop the world’s best NoSQL database, compatible with Apache Cassandra. We also develop Seastar, a C++ framework for high-performance asynchronous applications, and OSv, a new operating-system designed from scratch especially for running on virtual-machines in the cloud. All three projects are developed as open-source software.