http://en.wikipedia.org/wiki/Firefox
Different Types of Internet Browsers
by: Michael Tang
1) Firefox
http://en.wikipedia.org/wiki/Firefox
Internet Explorer, abbreviated IE or WIE (versions below 7 are abbreviated MSIE), is a proprietary graphical web browser made by Microsoft and included as part of most members of the Microsoft Windows line of operating systems. It has been the most widely used web browser since 1999. Though released in 1995 as part of the initial OEM release of Windows 95, Internet Explorer was not included in the first retail, or shrink-wrap, release of Windows 95. The last major upgrade to Internet Explorer, 6.0 SV1[1], is included in Windows XP Service Pack 2 and Windows Server 2003 Service Pack 1 only. Version 7 of Internet Explorer is currently under development; beta versions have been released on a regular basis, most recently Release Candidate 1 (build 5700.6) released August 24, 2006. Versions of Internet Explorer prior to 6.0 SV1 are also available as a separate download for versions of Windows up to Windows XP. There is a version for Windows CE and Mobile called Pocket Internet Explorer.
http://en.wikipedia.org/wiki/Internet_explorer
http://www.microsoft.com/windows/ie/default.mspx
3) Opera -
Opera is a brand new internet browser that can be used in desktop top computer, mobile cell phones and other devices such as video game consoles. It is an Internet suite which handles common internet-related tasks, including visiting web sites, sending and receiving e-mail messages, managing contacts, and online chat. Opera is developed by Opera Software, based in Oslo, Norway. It runs on a variety of operating systems, including Microsoft Windows, Mac OS X, Solaris, FreeBSD and Linux systems. It is also used in mobile phones, smartphones, Personal Digital Assistants, game consoles and interactive televisions. Technology from Opera is also licensed by other companies for use in such products as Adobe Creative Suite. Desktop and Mobile Mini versions of Opera are available free of charge.