Microsoft WebMatrix is a tool for "building, customizing and deploying websites in one common, straightforward experience." This tool is free, provides core coding and database support, integrates with an open source web application gallery, and includes support to easily publish/deploy sites and apps to web hosting providers.
It includes IIS Developer Express, SQL Server Compact (an embedded database), and a set of ASP.NET extensions that enable you to build standalone ASP.NET Pages using new "Razor syntax," as well as a set of easy to use database and HTML helpers for performing common web-tasks. WebMatrix can be installed side-by-side with Visual Studio 2010 and Visual Web Developer 2010 Express. It streamlines Web site development and makes it easy to start Web sites from popular open-source apps."