MariaDB is a community-developed fork of the MySQL relational database management system intended to remain free under the GNU GPL. Developed by MariaDB Foundation
License: Open Source
MariaDB is a relational database that excels in structured data and ACID transactions, making it ideal for traditional applications. In contrast, Apache Cassandra is a NoSQL database designed for handling large volumes of unstructured data across distributed systems, prioritizing scalability and write performance.