HTML5 is a new set of web standards that adds additional functionality to modern web browsers without breaking the web for older browsers. This evolution in web development enables browsers to natively (without additional plug-ins like Flash or QuickTime) display audio and video, use CSS3 to animate elements like images and text, reduce site load times, add geolocation support and a number of additional enhancements.
These updates to HTML and CSS give developers an opportunity to build sites that are more powerful, handle information better and work on a wider range of devices.
Apple, Google and Microsoft have all created websites to show off the power of HTML5. To view the demos below, you’ll need to use one of the following browsers: Safari 5+, Google Chrome, Firefox 3.6+, or Internet Explorer 9 Beta.
Apple – www.apple.com/html5
Google – studio.html5rocks.com
Microsoft – www.beautyoftheweb.com
Continue reading here – Insight Issue6 – Flash Vs HTML5