dbForge SQL Complete - Try Intellisense functionality and Improved SQL Formatter in SQL Server Management Studio and Visual Studio using SQL Complete!
gitSQL - Database source control for SQL Server, PostgreSQL
SQL Doc by Red Gate - Document your databases automatically.
Flyway - Flyway is a database migration tool.
ApexSQL Complete - ApexSQL Complete can automatically fill in SQL keywords, statements and identifiers.
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.