Microsoft has made available many free downloadable apps for SQL Server, Azure SQL Database, and Azure SQL Data Warehouse, including:

• SQL Server Management Studio (SSMS)
• Azure Data Studio (formerly SQL Operations Studio)
• SQL Server Data Tools (SSDT)
• Data Migration Assistant (DMA)
• SQL Server documentation at GitHub
• Database Engine Tuning Advisor and dta utility – analyzes a workload or SQL script and recommends data server structures to improve performance
• mssql-cli – a command-line tool for querying SQL Server on Windows, macOS, or Linux
• SqlCmd utility and Microsoft Command Line Utilities
• Database Console Commands (DBCC)
• SQL Server Diagnostic Connection for Database Administrators (DAC)
• mssql-scripter – multi-platform command line tools for SQL Server scripting
• Trace Flags
• TableDiff utility – a row by row data comparison of two tables
• Diagnostic Connection or Dedicated Administrator Connection (DAC)
• SqlLogShip – a command line tool for log shipping operations
• SqlLocalDB – a command line tool for SQL Server Express LocalDB
• SqlPackage – a command-line tool for importing and exporting databases and snapshots from SQL Server or Azure SQL databases
• mssql-conf – configure SQL Server on Linux
• RML Utilities for SQL Server – a set of tools and processes to run load tests
• Database Experimentation Assistant (DEA) – an A/B testing solution for SQL Server upgrades
• Distributed Replay – replay a workload like SQL Server Profiler but from multiple computers for SQL Server or Azure SQL databasesA list of most of these SQL tools and utilities can be found at the SQL tools overview and command prompt utilities pages.