Quick3D allows you to look at a 3D object and rotate it to view it from various angles. VRML is a specification for displaying 3-dimensional objects on the web. These plug-ins are probably the most popular on the web. They let the browser handle pre-programmed music and video clips that are on a web page. Presentations on the web can have audio, video, hyperlinks, animations, etc.
Utility programs are the generic programs that provide basic web support.
Net-Install allows Netscape users to download, decompress and install software in one step. Pointcast Network is an example of the new push technology software that broadcasts news or other information automatically to your computer. As you can see with the sites above, there is a wide range of plug-ins available. If the program that you download has an .exe extension, you just need to double click on the file to open it up and make it uncompress itself. If the file has a .zip extension, you will need a program like Winzip or Net-Install to make the program uncompress itself.