On Microsoft.com you can download Microsoft® SQL Server® 2012 Express. It’s a free software for home use – education, tests or something like this. When you click "Download" link on a page  http://www.microsoft.com/en-US/download/details.aspx?id=29062, you can see a list of versions for downloading. Which one to choose?

SQLEXPR: MS SQL Express, just the engine

SQLEXPRWT: MS SQL Express with Tools = engine and Management studio

SQLEXPRADV: Express with advanced services = engine, Management studio, additional features (fulltext search, reporting services, integration services, SQL Server Data Tools etc.)

More information you can find in the table below.

Features	SQLEXPR	SQLEXPRWT	SQLEXPRADV
SQL Server Core	*	*	*
SQL Server Management Studio	-	*	*
Distributed Replay – Admin Tool	-	*	*
LocalDB	-	*	*
SQL Server Data Tools (SSDT)	-	-	*
Full-text and semantic search	-	-	*
Specification of language in query	-	-	*
Some of Reporting services features	-	-	*