SQL Server Versions

  Please read the installation instructions for details of
  which version of the software you should download.

SQL 2008 R2   Installing SQL Server 2008 R2 Express
    Download SQL Server 2008 R2 Express
SQL 2014   Installing SQL Server 2014 Express
    Download SQL Server 2014 Express
SQL 2016   Installing SQL Server 2016 Express ( requires 64bit PC and Windows 10 )
    Download SQL Server 2016 Express