Liquibase - Database schema change management and release automation solution.
Datahike - A durable datalog database adaptable for distribution.
Sqitch - Sqitch is a standalone database change management application without opinions about your database engine, development environment, or application framework.
MySQL - The world's most popular open source database
Flyway - Flyway is a database migration tool.
Matisse - Matisse is a post-relational SQL database.