ScyllaDB is described as 'Open-source distributed NoSQL wide-column data store. It is compatible with Apache Cassandra and supports the same protocols (CQL and Thrift) and file formats (SSTable), as well as the Amazon DynamoDB API, and is based on C++20' and is an app in the development category. There are more than 10 alternatives to ScyllaDB for a variety of platforms, including Mac, Linux, Self-Hosted, Windows and Web-based apps. The best ScyllaDB alternative is MongoDB, which is free. Other great apps like ScyllaDB are Redis, Valkey, DiceDB and Apache Cassandra.