MySQL 4.1 Downloads

The MySQL database server is available under the MySQL AB “dual licensing” model. Under this model, users may choose to use MySQL products under the free software/open source GNU General Public License (commonly known as the “GPL”) or under a commercial license.

Support, training, and certification are also all available.

If you want to be updated on the latest MySQL news and receive tips and hints, you can subscribe to the MySQL Newsletter.

This is the current generally available (GA) release of the MySQL database server. It is recommended for most users

You can find a description of the major new features in MySQL 4.1 here.
The complete list of changes can be found here. You can find how to upgrade from MySQL 4.0 here.

The Standard binaries are recommended for most users, and include the InnoDB storage engine. The Max version includes additional features such as the NDB (Cluster) storage engine, the Berkeley DB storage engine, and other features that have not been exhaustively tested or are not required for general usage, such as user-defined functions (UDFs) and BIG_TABLE support. When these features have matured and proven to be stable, they will be incorporated into future releases of the Standard binaries. The Debug binaries have been compiled with extra debug information, and are not intended for production use, because the included debugging code may cause reduced performance.