Mockups Design - Mockups Design is the most leading web-based application that comes with a vast collection of creatively design mockups for all kinds of products and devices.
Mashup Template - Collection of beautiful free HTML templates
Mr. Mockup - Mr.
Ethereal by HTML5 UP - A fully responsive side-scrolling one-page HTML5 template
Pixeden - Pixeden is an all-in-one premium design and web resources platform that provides high-quality graphic design templates and lots of other files.
Inovatik HTML Templates - Download 24 FREE HTML templates to help you create beautiful websites and landing pages faster.