dbForge SQL Complete is an add-in for SQL Server Management Studio and Visual Studio that speeds up SQL code writing, offers context-based smart suggestions, performs automatic formatting, refactoring and a lot of other things that save your time and effort in the database development process.
DBeaver - DBeaver - Universal Database Manager and SQL Client.
Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
ApexSQL Complete - ApexSQL Complete can automatically fill in SQL keywords, statements and identifiers.
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
ApexSQL Doc - ApexSQL Doc creates database documentation in a variety of formats.
a7 SqlTools - Tools for MS Sql management with search, explore and comparison functionality.