MariaDB vs Amazon QLDB: What are the differences?

MariaDB: An enhanced, drop-in replacement for MySQL. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry. MariaDB is designed as a drop-in replacement of MySQL(R) with more features, new storage engines, fewer bugs, and better performance; Amazon QLDB: A fully managed ledger database. It is a fully managed ledger database that provides a transparent, immutable, and cryptographically verifiable transaction log ‎owned by a central trusted authority. It can be used to track each and every application data change and maintains a complete and verifiable history of changes over time.

MariaDB and Amazon QLDB can be primarily classified as "Databases" tools.

Some of the features offered by MariaDB are:

• Replication
• Insert Delayed
• Events

On the other hand, Amazon QLDB provides the following key features:

• Immutable and Transparent
• Cryptographically Verifiable
• Serverless

MariaDB is an open source tool with 3.44K GitHub stars and 1.03K GitHub forks. Here's a link to MariaDB's open source repository on GitHub.