This simple extension for Radiant CMS provides a tag for the output of the title of the site. The site title should be set in a configuration setting with a key of 'site.title'.
Also allows for the option to output the site title along with the page title, as would be displayed in the <title> tag of a HTML page.
Your Site Title
<r:site:title with_page_title="true" />
Your Page Title » Your Site Title
<r:site:title with_page_title="true" separator=" | " />
Your Page Title | Your Site Title