Redgate SQL Data Compare - Use Redgate SQL Data Compare to compare and synchronize static, lookup, and reference data in your SQL Server database - try it free
Flyway - Flyway is a database migration tool.
Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
Liquibase - Database schema change management and release automation solution.
DBComparer - Free Compare database tool - DBComparer 3.0 is a professional compare database tool for comparing Microsoft SQL Server 2008 (and 2005) database structure.
gitSQL - Database source control for SQL Server, PostgreSQL