1. Explorer 10
1.1. Pros
1.1.1. 1.Microsoft definitely knew its reputation of being the slowest browser around, and this update seems to at least get parity with the competition.
1.1.2. 2. IE10 actually respects web standards, which is another big step in the right direction
1.2. Cons
1.2.1. 1. IE has that same tiny little button, but instead of giving it a cozy, 75-pixel wide home next to the address bar, it forces it on to a toolbar that extends the entire width of the window.
1.2.2. 2.Microsoft’s confusing suite of services (Bing, Live, Hotmail, Outlook, Xbox Live, etc.) is the backbone for integration in IE
2. Apple Safari 5
2.1. Pros
2.1.1. 1.Good standards support
2.1.2. 2. Decent extension selection
2.2. Cons
2.2.1. 1.Not being updated together with Mac version
2.2.2. 2.No hardware acceleration for Windows
3. HTML
3.1. Pros
3.1.1. 1.HTML5 elements we can increase the semantic value of the web page as the codes are very standardized
3.1.2. 2.HTML 5 will enable web designers to use cleaner, neater code, we can remove most div tags and replace them with semantic HTML 5 elements
3.2. Cons
3.2.1. 1.Another ugly fact about HTML5 is that because of licensing issues, rich media has to be compressed in multiple formats in order to be compatible with most browsers
3.2.2. 2. Parts of the language are very stable, the language itself is considered a work in progress, so technically, any of the elements could change at any time
4. Opera 12.10
4.1. Pros
4.1.1. 1.Excellent HTML5 support
4.1.2. 2.yncing of bookmarks, settings, passwords, history, and more
4.2. Cons
4.2.1. 1.Occasionally sites won't display properly, though this is getting rare
4.2.2. 2.Hardware acceleration not enabled by default
5. Chrome 27
5.1. Pros
5.1.1. 1.Hardware acceleration
5.1.2. 2.Instant site prediction and loading
5.2. Cons
5.2.1. 1.Fonts occasionally jagged
5.2.2. 2.Still some occasional minor site incompatibilities
6. Mozilla Firefox 21
6.1. Pros
6.1.1. 1.Clean, minimal interface
6.1.2. 2.Compatible with MacBook Retina displays.
6.2. Cons
6.2.1. 1.Lacks client-side tracking protection like that found in IE9
6.2.2. 2.Lacks Chrome's built in Flash and Instant page view.