Applet Capability:

Much of the power of the WWW stems from its platform dependence in which is it presents information in a way which could be viewed on almost every type of machine and operating system.  That doesn't matter whether you use a PC, Macintosh, or UNIX workstation the Web is architecture neutral that is why so several people have access to it.

Unfortunately, being so hugely accepted also has its drawbacks.   This is hard to extend the Web protocol without leaving several Web users behind.. For example Web content developers are constantly trying to extend the capability of the Web through integrating new types of media, such as 3d worlds and animation, but these developers then face the prospect of excluding people without those viewing capabilities, that limits their audience.

The existing Web standards allow seamless integration of graphics along with text. Other forms of media, a as sound, video, and animation are accessible through the Web but they ar enot smoothly connected with normal Web content.  For example it is easy to create a link to a sound file in a HTML document the Web browser will either play the sound or download it to a file when a the user clicks on the link.  Therefore, there is no browser independent way to create background music for a document or provide audio feedback when a button is pressed. This is just one of the several creative limitations which have frustrated Web developers over the past few years.

Until now, the solution to this extensibility problem has been to create a proprietary protocol and then try to seal the solution to as several users on as several platforms as possible. It is a hard sell and has had limited success. Conclude Web pages tend to cater to the lowest general denominator thus; the content has not reached its full potential in several objects.

A good instance of this is Adobe's Portable Document Format. This is a cross platform solution for creating robust documents and distributing them on the internet. PDF gives support for documents far richer than simple HTML permitting groups such as the internal Revenue Service to ship tax forms across the Web. An Adobe gives the viewer for free but tries to make money on the tools which create PDF document. PDF's main limited is which you required to download special programs from Adobe to view the files.