dbForge SQL Tools - SQL Server tools for SQL database development
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
SQL Admin Toolset - Database Administration for SQL Server - Database administrators need simple and quick ways to manage their SQL Server environment.
Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
ApexSQL Monitor - SQL Server performance monitor - Monitor, detect, and solve SQL Server performance problems on any device
Replicator - Easily replicate database table data - even with heterogeneous databases.