Skeleton is a free WordPress theme that was released by SimpleThemes, Skeleton is well documented, optimised for mobile use and even comes packaged with it’s own bbPress template.

PressWork is a free, open source theme framework built for WordPress 3.2 using HTML5 and CSS3. Created by c.bavota and Brendan Sera-Shriar.

Slated WordPress Theme is a well-designed Magazine Style Theme that has unlimited Colors. Just set in the admin panel your own color preference for this theme. Theme also has Featured jQuery slider, Thumbnails on Posts, Widget Ready, Theme Administration Options and more.

LockSmith is Fresh Magazine Style WordPress Theme. This theme is easy on the eyes and looks absolutely grungy and fresh. Theme works perfectly using pixel perfect graphics and pictures to present the content. The theme is packed with outstanding features and options you can set in the admin panel. This Free WordPress Theme works in all major browsers, uses jQuery slider on Featured Articles, Thumbnails on Posts, Widget Ready, and more.