Microsoft SharePoint Designer 2010 is a Web and application design program used to build and customize SharePoint sites and applications. With SharePoint Designer 2010, you can create data-rich pages, build powerful workflow-enabled solutions, and design the look and feel of your site. The sites you create may range from small project management sites to dashboard-driven portal solutions for the enterprise.
SharePoint Designer 2010 delivers a unique site authoring experience by providing one place where you can create a site; customize the components that make up the site; design the logic of the site around a business process; and deploy the site as a packaged solution. You can do all this without writing a line of code.