How to tell what plug-ins you have installed

With Netscape Navigator and Communicator, click the Help menu, then click About Plug-ins. You will see information on all the plug-ins that are installed in that copy of Netscape. For instance, if you have the Adobe Acrobat plug-in installed, it will look something like the following. You only have to be concerned with the bold heading. If you see the plug-in listed, then it is installed.