SQL Server Comparison Bundle contains SQL Server Schema Compare and SQL Server Data comparefor comparing and synchronizing SQL Server database schema and data.
SQL Server Express–comparison Tools is free for SQL server Express.
Http://www.xsql.com/download/public/sql_server_comparison_bundle/xSQL.Bundle.SqlServer.Setup.msi
Sqldbx is built around a advanced SQL Editor and Database Object Explorer. SQLDBX provides a consistent user interface between different DBMS Systems. The intuitive and straightforward interface allows developers to improve their productivity by have easy access to Commo Nly used features. Run queries, execute scripts, and browse database objects without ever leaving the editor window. Sqldbx is a standalone executable file, requiring no installation, leaving the user ' s computer unmodified.
Sqldbx Personal Edition are a free version of the Professional Edition, and are for Personal non-commercial use. It does not have time limit or nagging screens. You can use Sqldbx Personal Edition in a commercial environment for evaluation purposes for period of 3 months
Http://www.sqldbx.com/Files/sqldbxpersonal.zip
Database comparison Software