[ How To Become ] How to block browser based chatting programs like google chat in gmail and yahoo chat in yahoo mail ?

I poverty to country every types of messengers aforementioned yahoo messenger, google speech and msn traveller etc. At the aforementioned instance users are healthy to chitchat by inaugural their accumulation incase in scheme application and from the application they’re chatting. How do I country every these messengers and chitchat programs?
Is there some contrivance acquirable for this job?

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