I want some help to find a right download limiter for Firefox web browser. I have Opera and Firefox in my system. I want to get some online videos. As my office pc does not allow me to install any third party application I only have the option to use through a Firefox Add-on. I found Video Download Helper which gets the video link very easily. But I do not have a limiter. When I start download it takes time and the Internet connection working around me gets affected. I need some silent way to reduce the bandwidth limit.