The World's most popular open source database

MySQL is an open source relational database management system that uses Structured Query Language (SQL), the most popular language for adding, accessing, and processing data in a database. According to the MySQL Benchmarks, it's faster than Access, DB2, Informix, MS-SQL, Solid, Sybase, and Oracle on Windows Platform. The MySQL server is fully networked, and therefore it can be accessed from anywhere on the internet. MySQL has full access control so you can determine the level of access you'd like users to have.

These are some of a long list of Companies that use MySQL as their database.