Base is a minimally-styled, feature-rich, theme framework built specifically to power child themes. It includes an application framework, a theme options framework and a robust set of options for customizing your site.
Chromatic is a responsive portfolio theme for WordPress that is perfect for showcasing vertical, horizontal, or square images. Chromatic supports seven post formats, a portfolio custom post type, slideshows and includes multiple page templates for alternate homepage designs.
Emporia - a minimalist theme that supports multiple authors for creating a team portfolio and blog. NOTE: Emporia is a child theme for Base, a theme framework for WordPress. You *must* have Base installed for Emporia to work.