dbForge SQL Complete - Try Intellisense functionality and Improved SQL Formatter in SQL Server Management Studio and Visual Studio using SQL Complete!
Flyway - Flyway is a database migration tool.
ApexSQL Source Control - SQL source control - Seamlessly integrate SQL source control with SQL Server Management Studio (SSMS)
yuniql - Free and open source schema versioning and migration tool made with .NET Core. Plain SQL, arrange versions in ordinary folders and seed your data from CSV via stand-alone CLI (no CLR needed), Azure Pipelines, Docker or ASP.NET Core code.
SQL Prompt - SQL Prompt Pro strips away the repetition of coding by making writing, formatting, and refactoring...
gitSQL - Database source control for SQL Server, PostgreSQL