What language(s) are programs like ActiveInbox written in?

I want to write something similar to ActiveInbox.

In addition to original ActiveInbox, I need to add logic that will perform some actions on the emails that come开发者_开发技巧.

What language(s) are programs like ActiveInbox written in?

Thank you

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Activeinbox is a browser plugin, written in Javascript. It's easy to have a look inside: download the xpi (the Firefox version of the plugin). An xpi file is a zipfile, so open it with your zipfile manager of choice.

After that you should head over to Mozilla's developer site or a Chrome extension development tutorial to learn how to wite a Firefox/Chrome plugin.

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Extensions can be written in pure Javascript on Chrome and Firefox.