MySQL Community Edition is a freely downloadable version of the world’s most popular open-source database that is supported by an active community of open source developers and enthusiasts. It is a fully integrated, transaction-safe, ACID compliant database with full commit, rollback, crash recovery, and row-level locking capabilities.
MySQL Cluster Community Edition is available as a separate download.
MySQL Cluster is provided as a separate download so that users can have access to builds from the latest source releases of the MySQL Cluster Carrier Grade Edition (http://www.mysql.com/downloads/clustercge/).
Download: http://dev.mysql.com/downloads/mysql/