1. Define
1.1. A web browser (commonly referred to as a browser) is a software application for retrieving, presenting and traversing information resources on the World Wide Web.
1.2. A browser extension is a computer program that extends the functionality of a web browser in some way. Depending on the browser and the version, the term may be distinct from similar terms such as plug-in or add-on.
1.3. HTML5 is a markup language for structuring and presenting content for the World Wide Web and a core technology of the Internet.
2. Google Chrome 23
2.1. Pros
2.1.1. 1.Every tab, window, and plug-in runs in its own environment--so one faulty site won't affect anything else that you have open.
2.1.2. 2.As you use it, the program remembers the sites that you visit most often.
2.2. Cons
2.2.1. 1.When Chrome was first introduced one of the main drawbacks was the absence of add-ons and extensions that provide flexibility to the users.
2.2.2. 2.You lose some history power.
3. Mozilla Firefox 16.2
3.1. Pros
3.1.1. 1.Firefox® is reported to be the fastest browser when it comes to download speed.
3.1.2. 2.This browser has some advanced security measures that help protect a computer from spyware and even certain viruses.
3.2. Cons
3.2.1. 1. Firefox takes a lot of memory to run.
3.2.2. 2.Some websites do not show properly in this browser and require the user to view them with IE.
4. Explorer 10
4.1. Pros
4.1.1. 1.Decent HTML5 support.
4.1.2. 2.Top security and privacy features.
4.2. Cons
4.2.1. 1.No built in Flash or PDF reader.
4.2.2. 2.Still needs work on new Web tech support.
5. Apple Safari 5
5.1. Pros
5.1.1. 1.Uses memory efficiently.
5.1.2. 2.Very simple to use.
5.2. Cons
5.2.1. 1.No add-ons/extensions to give it extra functionality.
5.2.2. 2.Does not auto update.
6. Opera 12.10
6.1. Pros
6.1.1. 1.Excellent HTML5 support.
6.1.2. 2.Syncing of bookmarks, settings, passwords, history, and more.
6.2. Cons
6.2.1. 1.Hardware acceleration not enabled by default.
6.2.2. 2.Has a slower startup time.