HTML5 Boilerplate

HTML5 Boilerplate is the professional badass's base HTML/CSS/JS template for a fast, robust and future-proof site.
After more than two years in iterative development, you get the best of the best practices baked in: cross-browser normalization, performance optimizations, even optional features like cross-domain ajax and flash. A starter apache .htaccess config file hooks you the eff up with caching rules and preps your site to serve HTML5 video, use @font-face, and get your gzip zipple on.

52framework

52framework is a complete tool to help you start building with HTML5 and CSS3 with the use of new tags, input fields, rounded-corner, text-shadows, etc.
It includes a grid system and CSS reset (that is modified for HTML5).

• HTML5
  
  
  • Use of all the most useful current html5 tags including: header, nav, section, article, footer, and more to come soon (with styling)
  • Use of the all new <!DOCTYPE html> and <html lang="en">
  • New input field types: url, email, etc
  • Script embed (javascript) using only the script tag without the attribute type
  • Modified Reset Stylesheet for HTML5
• CSS3
  
  
  • Use of the new ::selection selector that enables you to customize the properties of selected text.
  • Rounded Corners for any block level element
  • Text-Shadow for text elements
  • Box Shadow for block level elements
• Grid
  
  
  • 16 column, 52 pixel based with 8 pixel gutter