An elegant, flexible theme with built-in display options and alternate styles. Tarski includes support for aside-style posts, comes with numerous default header images, and translations are available for over 20 different languages. It is extremely customisable, both by the usual WordPress mechanisms such as custom headers, backgrounds and menus, but also by its support for custom CSS files and an extensive, well-documented API that gives child theme and plugin authors a huge amount of control without needing to modify the theme's files, making upgrading to new versions simple.
Pupul is a simple, neat, clean, nice looking, fastest loading theme based on HTML, CSS & Aplau Framework for your WordPress site or blog. Use custom menu, custom logo, six widgets ( two sidebar widgets, four footer widgets, advertisement and analytics ready features with theme options.
Newschannel is a pretty versatile theme, that places the emphasis of the home page and archive pages on featured images. It would be great for a personal blog, but would also be good for a local news site or even a photography blog.
Panels is a free WordPress theme with custom header, custom background, custom menus and widgets features - clean, fast loading and displays a featured image for each post (200px by 200px) to give a beautifully simple and consistent feel to your website. Highly customisable, supports widgets and three custom menus, backgrounds and header images - so your website's content stands out.
Fotogram is a clean and fast loading theme with custom background, custom header, Twitter, Facebook and Youtube links - easy to customise to your needs. Widget and custom menu friendly - install and you're ready to go. Ideal for photographers, designers and anyone who wishes to show off their work.
A WordPress Theme based on Bootstrap, from Twitter. It features a 100% responsive layout, a superb gallery and image handling with a custom image meta widget and carousel for gallery post-formats, the Glyphicon Icon set, a clean and simple design and a lot more! The Bootstrap runs on HTML5 and CSS3, a 12-column grid and comes with custom jQuery plugins. See the Bootstrap documentation on GitHub for reference.