HTML5 UP provides 100% free, fully responsive HTML5 and CSS3 site templates designed by @ajlkn for web developers and designers.

FreeHTML5.co provides high-quality, free HTML5 website templates built using the Bootstrap framework for web designers and developers.

Provides free, responsive HTML5 and CSS website templates for personal and commercial use, requiring attribution or a small donation for removal.

FreeHTMLDesigns provides free HTML designs, HTML5 templates, and CSS/jQuery resources for web developers and designers looking for ready-made assets.