MySQL and MariaDB are both relational database management systems (RDBMS) that are used to store and manage data. While both systems have a lot in common, there are some key differences between them.

One of the main differences between MySQL and MariaDB is the ownership and development of the two systems. MySQL is developed, distributed, and supported by Oracle Corporation, while MariaDB is developed by the original creators of MySQL, and is supported by the MariaDB Corporation.

Another key difference between the two systems is the level of support for open source development. MySQL is available under a dual-license model, which means that users can choose between the free, open-source version of MySQL or a commercially licensed version. MariaDB, on the other hand, is available only under the open-source GNU General Public License (GPL).

In terms of performance, there is not a clear winner between MySQL and MariaDB. Both systems are known for their speed and reliability, and both have a strong track record when it comes to supporting large-scale, high-traffic websites and applications.

In terms of features, MariaDB offers a number of enhancements and improvements over MySQL, including better performance, better integration with modern storage engines, and support for additional data types and storage engines.

Ultimately, the choice between MySQL and MariaDB will depend on your specific needs and requirements. Both systems are powerful and reliable, and both have a strong community of users and developers. It may be worth trying both systems out and seeing which one works better for your particular use case.