1. Safari 5
1.1. Pros
1.1.1. 1. Fast performance
1.1.2. 2. New tab page is vivid
1.2. Cons
1.2.1. 1. Add-ons limited
1.2.2. 2. Heavy memory and system requirements
2. Opera 12.10
2.1. Pros
2.1.1. 1. Fast
2.1.2. 2. Cross platform support
2.2. Cons
2.2.1. 1. No standard shortcut keys
2.2.2. 2. Extension gallery not so extensive
3. HTML5
4. Marketshare
5. Chrome 27
5.1. Pros
5.1.1. 1. Instant site prediction and loading.
5.1.2. 2.Built-in Flash player and PDF reader.
5.2. Cons
5.2.1. 1. Fonts occasionally jagged.
5.2.2. 2.Do Not Track privacy feature is buried and discouraged.
6. FireFox 19
6.1. Pros
6.1.1. 1. Clean, minimal interface.
6.1.2. 2. Good security.
6.2. Cons
6.2.1. 1. Lacks Chrome's built in Flash and Instant page view.
6.2.2. 2. Lacks client-side tracking protection like that found in IE9.
7. Explorer 10
7.1. Pros
7.1.1. 1. Full-screen view.
7.1.2. 2. Fast.
7.2. Cons
7.2.1. 1. Still missing some HTML5 features.
7.2.2. 2. Split personality on Windows 8?two very different interfaces.
8. Define:
8.1. Browser
8.1.1. 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.
8.2. Browser Extension
8.2.1. a software component that adds a specific feature to an existing software application.