Helper Applications and Plugins

Independent Program or library used to process specific (new) MIME type
- Must be built for specific platform and operating system, not portable.
- Must be downloaded, and installed correctly.
- Can do anything on machine, no security.

Notes:

what is helper app - arbitrary app to handle content

what is plugin

content is portable, application is not

installation differences

trick when installing

Signed code and trusted source helps.

Examples:

Tcl/Tk

VRML

PDF