Internet Explorer for Windows

Internet Explorer is the most used Web browser in the world. Microsoft's priorities in Internet Explorer are security, ease-of-use, and improvements to RSS, CSS and Ajax support.

The browser's latest version supports:

Accelerators – which allow supported web apps to be invoked without explicitly navigation to them. WebSlices allows portions of a page to be subscribed and monitored from a redesigned Favorites Bar. SmartScreen phishing filter.

TechBeat's guide on alternative browsers is a great place to start if you're looking for something different.