Other than that, I am unsure what you need to know.
Browser can have "Add-ons", or "Plugins", but they are often downloaded and installed by the user to enhance the user's use of the browser.
Try researching Browser Add-ons in Google or your favorite search engine. You will see much more there tan can be provided in these forums.
Anybody know about what is Browser applications and how these applications are implementing.
Please posts regarding this if any information if u know.
Thanks & Regards