how make a simple plugin for several web browsers? [duplicate]

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Closed 8 years ago.

Possible Duplicate:
How to write a browser plugin?

A plugin in a modern web browser like firefox or chrome, allows execute files (use webcamera and other) and take more control of pc ( A plugin, not a extension).

How make a simple plugin for educational purposes ?

EDIT 1: Information of extension of chrome is extensive, but this question is not about of extensions (.xpi on firefox),otherwise plugins (.so or .dll)

Answer 1

Check out the FireBreath framework