Originally created by a designer and a developer at Twitter, Bootstrap has become one of the most popular front-end frameworks and open source projects in the world.
Bootstrap contains coding for device responsive sizing. Sites will display a specific layout rule-set for Laptop, Desktop, Tablet and smartphones. This will help ensure your sites are "usable" especially on smaller size devices.
PSD Templates that contain only the graphic design source files. These templates include the homepage PSD and a subpage containing a set of elements that are normally used for subpage development of websites. e.g. contact form, icons and text samples. A PSD Photoshop file means that you work only with raw source image files and you can make any modifications without being limited by the requirements of some CMS platform design. These files are for for Advanced users of Photoshop, those used to creating websites from scratch.
HTML5 templates are designed and programmed using the most current HTML5 and CSS 3 standards. They utilize a number of the new HTML 5 structuring tags for header, content, menu, and footers making them easier to modify and better for search engines. The HTML5 templates are among the best for viewing across the myriad screen sizes from smart phones to large screens.
Responsive Website Templates are coded to deliver the correct size screen view no matter the device. Used to provide great looking and readable sites on iPad, iPhone, Androids as well as laptops and desktops.