There are also AudioSuite plug-ins for processing audio to new media files. These are used from the AudioSuite menu in Pro Tools.
Within these types, there are many other categories of plug-ins, filters, proc essors, gates-compressors, virtual musical instruments, and audio routing software. There are hundreds of plug-ins available from Digidesign as well as other suppliers. As it is possible to spend hundreds of thousands of dollars on plug-ins, the question comes up, what do I really need?