MariaDB Overview
MariaDB is a community-developed, commercially supported fork of the MySQL relational database management system (RDBMS). It is intended to remain free and open-source software under the GNU General Public License. MariaDB is a popular choice as a drop-in replacement for MySQL due to its compatibility and enhanced features.
Percona Overview
Percona is a company that provides open-source database solutions, consulting, and managed services for MySQL, MariaDB, and PostgreSQL. They are well-known for their performance-focused distributions, tools, and expertise in database optimization. Percona's products aim to improve database performance, availability, and manageability.