VersionSQL is described as 'quick and easy way to unlock the power of version control for your database' and is a Version Control System in the Development category. There are four alternatives to VersionSQL for Windows, Linux, Mac and SQL Server Management Studio. The best alternative is dbForge Source Control for SQL Server. It's not free, so if you're looking for a free alternative, you could try gitSQL. Other great apps like VersionSQL are ApexSQL Source Control (Paid) and SQL Source Control (Paid).
dbForge Source Control for SQL Server is an SSMS add-in for managing SQL Server database changes in source control. The tool can link your databases to all popular source control systems and delivers smooth and clear workflow in a familiar interface.
ApexSQL Source Control is a SQL Server Management Studio add-in which allows you to version control SQL databases and objects directly from inside SSMS. It integrates with all major source control systems.