Managers Download is, as its name implies, programs that serve to download files from the Internet. That is, it speeds up program downloads in the case of direct downloads, since they are not designed to download P2P program files.
The download managers are very useful when you want to download large programs, because if we do downloading from a computer with a traditional browser, before the first connection failure or low power, is likely to miss the entire download , Being able to take until days to lower a program of great size.
As you can imagine, the download managers act through a process by which they divide the downloads into chunks, which makes the process much faster, can usually increase the download speed by up to five times.