Polishop is responsive eCommerce HTML template including 2 slideshows (Nivo Slider, Flexslider), Cloud Zoom plugin integrated for zooming product images on the product page, categories accordion, Facebook and Twitter Feeds Box, 3 Header Design style, Mega Menu support, cross browser compatible available for free download during December (until December 31st, 2016) on Themeforest.
Aside is premium fullscreen and responsive HTML portfolio theme with light and dark background versions available, fullwidth background video support, parallax enabled and retina ready (WordPress version also available on Themeforest!).
Based on Bootstrap, build with HTML5 and CSS3 features, clean and modern design available for free till end of December 2015.
Streamline is a modern and professional, HTML5 / CSS3 one page template, mobile and retina display ready and suitable fors small businesses, creatives, digital agencies, artists, illustrators, photographers and other who want to showcase their work.
GeoMetry template is October’s Free File of the Month on Envato what means you can download it for free till end of this month.
GeoMetry is Bootstrap based, minimalistic style, clean design, working with maps and geographic position of the user, containes 5 valid HTML pages, uses Google Maps API, fully responsive and more.
Working on some eCommerce project then this month free Themeforest MaxShop Responsive eCommerce Template should get you started.
MaxShop Template has a 4 column responsive layout, very simple, clean and elegant design, includes 8 HTML pages and PSD layouts, written in HTML5 / CSS3, with Twitter Bootstrap, compatible in all major browsers till IE8+ and responsive in all major devices.