This theme is a 3 column widget ready theme. It is XHTML Strict and a CSS 2.1 compliant and uses the author’s comment highlight hack.
Two column, brown WordPress theme with a birdie calling out!
Crush is a simple three column theme with a single column sidebar and two columns for posts.
Grayplicity is the public release version of the theme being used for SuperSatellite.com. The default setup is a one column, full width (split ~70%/30% content/sidebar) layout. Has support for several plugins as listed on the theme page.
A dark, simple two column theme based on HelloWiki’s latest theme release.
Clean and minimalist theme with 2 columns, and ready to display 125×125 ad blocks
A light and extremely simple theme with 2 columns. It is based on Andreas’ 1024px XHTML/CSS template. Updated to support tags, category descriptions, gravatars and more. Validates as XHTML 1.0 Strict. Public domain.
Alibi is a 2 column fixed-width, free WordPress theme, with righthand sidebar, enabled for widgets.
3 column, with pinkie violet colors, widget-ready sidebar. Tested on WordPress 2.5.