schema-migrations

Database diagrams editor that allows you to visualize and design your DB with a single query.

Database governance built for humans and agents — controlling changes and access across every major database.

GitHub's Online Schema-migration Tool for MySQL

Migrate and update data alongside your database structure.

Ridgepole is a tool to manage DB schema. It defines DB schema using Rails DSL, and updates DB schema according to DSL. (like Chef/Puppet)