MarkTr (corporate) is a 3 column tag, widget & adsense ready theme. Theme has several added features i.e. Sitemap, Translators to German, Italian, Spanish & French and a custom tag page. This theme requires no plugins except "ultimate Tag Warrior".
Preview and download the theme below:
http://www.va4business.com/business/84/free-3-column-wordpress-theme-corporate-marktr-released/