Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
DBComparer - Free Compare database tool - DBComparer 3.0 is a professional compare database tool for comparing Microsoft SQL Server 2008 (and 2005) database structure.
DataWeigher - The DataWeigher is the tool to compare and synchronize data.
a7 SqlTools - Tools for MS Sql management with search, explore and comparison functionality.
Replicator - Easily replicate database table data - even with heterogeneous databases.
TiCodeX SQL Schema Compare - SQL Schema Compare supports Database schema compare for MS-SQL, mySQL and Postgres and runs on Windows, Linux and MacOS