With SQL Compare, you can compare and deploy the structure of two Microsoft SQL Server databases.

SQL Compare includes an add-in for Management Studio you can use to compare and deploy databases. For more information, see Getting started with the add-in.

Redgate also offers the following schema comparison tools:

• pgCompare (PostgreSQL)
• Schema Compare for MySQL
• Schema Compare for Oracle 

And Redgate Flyway is a x-database and x-OS solution to version control your database changes and automate your database deployments.

SQL Compare product page

Release notes for SQL Compare 16

Worked example - comparing and deploying two databases

Using the command line