With the SQL Server Management Studio add-in, you can launch SQL Compare projects from SQL Server Management Studio.

Launching a project from SQL Server Management Studio

To launch a saved project from SQL Server Management Studio:

1. In SQL Server Management Studio Object Explorer, right-click a database you want to compare in the project you want to launch.
   Under Saved Comparison Projects, click the project file you want to launch:

   

SQL Compare launches and opens the project.