1. Mozilla Firefox
1.1. Pros
1.1.1. 1 the development teams have tackled issues of importance to a lot of Web users
1.1.2. 2 offers graphics hardware acceleration, good HTML5 support, and the unique Panorama system for organizing lots of tabs.
1.2. Cons
1.2.1. 1. Lacks client-side tracking protection like that found in IE9.
1.2.2. 2.Lacks Chrome's built in Flash and Instant page view.
2. Chrome
2.1. Pros
2.1.1. 1 Leading HTML5 support means it will be ready for the future, application-like Web
2.1.2. 2 Hardware acceleration adds even more speed
2.2. Cons
2.2.1. 1. Do Not Track privacy feature is buried and discouraged.
2.2.2. 2. Still some occasional minor site incompatibilities.
3. Explorer
3.1. Pros
3.1.1. 1 Now available for Windows 7 as well as for Windows 8
3.1.2. 2 Microsoft's latest browser is faster, trimmer, far more compliant with HTML5
3.2. Cons
3.2.1. 1. No built in Flash or PDF reader.
3.2.2. 2. Still lags on new Web tech support (WebGL, e.g.).
4. Safari
4.1. Pros.
4.1.1. 2. Built-in RSS reader.
4.1.2. 1. Good standards support. Good browsing speed.
4.2. Cons.
4.2.1. 1.Slow startup
4.2.2. 2. No hardware acceleration for Windows.
5. Opera
5.1. Pros
5.1.1. 1 compliant with HTML5
5.1.2. 2 Opera's Turbo speeds up the Web on slow connections through caching.
5.2. Cons
5.2.1. 1. Occasionally sites won't display properly, though this is getting rare.
5.2.2. 2. Hardware acceleration not enabled by default.
6. Define:
6.1. Browser
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. Browser plugin (extension)
6.2.1. 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.
6.3. HTML5
6.3.1. a markup language for structuring and presenting content for the World Wide Web and a core technology of the Internet. It is the fifth revision of the HTML standard