Internet Explorer is a web browser developed by Microsoft that has had many versions since 1995. It has good security but is not very fast. Mozilla Firefox is a free and open source web browser where anyone can help with development. It is currently on version 3.6. Google Chrome is a web browser developed by Google using open source components and has a virtual machine for JavaScript. Safari is a graphical web browser developed by Apple and included in Mac OS X operating systems starting with version 10.3. Maxthon is a Windows web browser that supports both Trident and WebKit rendering engines and has grown popular in China since 2003.