MySQL 5.1

MySQL 5.1 Community Edition is a freely downloadable version of the world’s most popular open source database. It is supported by a huge and active community of open source developers and enthusiasts. The MySQL Community Edition is:
* Freely available under the open source GPL license
* Released early
* Released often
* Includes the latest bleeding-edge features that are under development

See for what’s new in MySQL 5.1 vs MySQL 5.0

MySQL v5.5.58 – updated 2018-01-13 (VERY lightly tested – feedback appreciated)

MySQL v5.1.68 – updated 2013-03-01 – needs libc065.dll and gcc446.dll

MySQL v5.1.72 – updated 2013-09-25