1. Mozilla Firefox 21
1.1. Pros
1.1.1. 1.competitively fast
1.1.2. 2.very secure
1.2. Cons
1.2.1. 1.need to restart browser after installing add-ons
1.2.2. 2.memory hog in older computers
2. Internet Explore 10
2.1. Pro
2.1.1. 1.download manager with malware protection
2.1.2. 2. good OS integration
2.2. Cons
2.2.1. 1.tab handling not as good as FF
2.2.2. 2.64 bit version less polished than 32 bit
3. Opera 12.14
3.1. Pro
3.1.1. 1.Fast, feature rich
3.1.2. 2. extension & themes support
3.2. Cons
3.2.1. 1.Extension gallery not so extensive
3.2.2. 2.no standard shortcut keys
4. Apple Safari 5
4.1. Pro
4.1.1. 1.Elegant UI with Cover Flow
4.1.2. 2.fast performance and browsing speed
4.2. Cons
4.2.1. 1.Add-ons limited and not useful
4.2.2. 2.heavy memory and system requirements
5. HTML5 Readiness
6. Stats
7. Browser Extesnsion: In the case of web browsers, extensions are programs that are integrated into your browser application, usually providing additional functionality.
8. Defenitions
8.1. Browser: a software application used to locate, retrieve and also display content on the World Wide Web, including Web pages, images, video and other files.
9. Chrome V.27
9.1. Pros
9.1.1. 1.Extremely fast
9.1.2. 2.built-in flash and pdf viewer.
9.2. Cons
9.2.1. 1.interface is not much customizable
9.2.2. 2. takes more HD space than Firefox and IE.