1. Mozilla Firefox 21
1.1. Pros
1.1.1. 1
1.1.1.1. Social network integration via API
1.1.2. 2
1.1.2.1. Compatible with MacBook
1.2. Cons
1.2.1. 1
1.2.1.1. Lacks client-side tracking protection like that found in IE9
1.2.2. 2
1.2.2.1. Lacks Chrome's built in Flash and Instant page view
2. Explorer 10
2.1. Pros
2.1.1. 1
2.1.1.1. High HTML5 compatibility
2.1.2. 2
2.1.2.1. Excellent touch input conveniences
2.2. Cons
2.2.1. 1
2.2.1.1. Two very different interfaces
2.2.2. 2
2.2.2.1. Missing some HTML5 features
3. Opera 12 10
3.1. Pros
3.1.1. 1
3.1.1.1. Opera boasts cutting-edge multimodal features and competitive navigation speeds
3.1.2. 2
3.1.2.1. Plug-ins run as separate processes
3.2. Cons
3.2.1. 1
3.2.1.1. The browser has frequent compatibility issues
3.2.2. 2
3.2.2.1. WebGL and hardware acceleration may not work properly on some machines, causing graphics artifacts
4. HTML5 Readiness
4.1. Pros
4.1.1. 1
4.1.1.1. Geo-location Detection
4.1.2. 2
4.1.2.1. Offline Storage Capability allowing the ability to handle data even when the app is no longer connected to the internet
4.2. Cons
4.2.1. 1
4.2.1.1. Lacks full support to HTML5
4.2.2. 2
4.2.2.1. HTML5 is still under development so there are many chances that lots of items might become obsolete
5. Marketshare
5.1. Pros
5.1.1. 1
5.1.2. 2
5.2. Cons
5.2.1. 1
5.2.2. 2
6. Definitions
6.1. Browsers
6.1.1. a software program that allows the user to find and read encoded documents in a form suitable for display, especially such a program for use on the World Wide Web
6.2. Plug-ins or Extensions
7. Chrome 27
7.1. Pros
7.1.1. 1
7.1.1.1. Chrome boasts top-notch speed.
7.1.2. 2
7.1.2.1. secure browsing and sync capabilities
7.2. Cons
7.2.1. 1
7.2.1.1. Lacks parental control
7.2.2. 2
7.2.2.1. Game play is lagging an very slow