Custom browser toolbar

To expand our services, we are looking for an customized toolbar with some specific functions to serve our customers quickly and let them do stuff more easily. I do not know if these things are possible from within the toolbar: * possible to check domain availability on our website * Receive news/alerts (remote managed) * some monitoring and manage options. But i like to know if this is possible before getting in details. ## Deliverables It needs to be downloaded with link on our site so the user can install it into the browser.