Download Compare Bundle for SQL Server
Note: By default, this tool is a standalone application, but it can integrate with Microsoft SQL Server Management Studio (SSMS) if SSMS 2016 or a later version is installed on the same machine.
Download dbForge SQL Tools for SQL Server (includes Data & Schema Compare)
Note: By downloading the bundle, you get 15 full-featured tools that greatly extend the standard functionality of SSMS. A standout feature of this edition is the T-SQL analyzer, included with SQL Complete. SQL Tools require Microsoft SQL Server Management Studio (SSMS) 2016 or later.