Allegiant is a free theme for WordPress created by WP Chill.
Allegiant is a free multipurpose WordPress theme perfect for agencies and professionals. This theme comes with support for a full homepage slider, feature blocks, portfolios, services, team members, and even testimonials, all thanks to its companion plugin CPO Content Types. Allegiant is one of the best business WordPress themes thanks to its neutral design and extreme flexibility. Moreover, this theme also integrates with popular plugins such as WooCommerce, Yoast SEO, WPML, and Contact Form 7.
(Description "Allegiant" Theme from wordpress.org)
You can download Allegiant for free via the provided download link and include it into your themes folder of your WordPress installation. Also you can directly search for it in the WordPress admin interface in the themes section and install and activate it from there.
More information, screenshots and reviews of Allegiant Theme can be found here.