About the acceleration effect for download speed of Internet Download Manager (IDM for short), I believe people who have used IDM can not leave it any more. Here, we do not need to introduce its features again.
Free online file hosts are good place to share our resources. However, these websites generally use the browser's built-in downloader to download files, and their download methods are widely different. Even a few ones support multi-threaded downloading, you often need to enter verification code, wait dozens of seconds to tens of minutes, and have to fight with the flying ads, popups first for finding out the real download button. More exasperating is, once the Internet connection is broken, all has to start from scratch (because many file hosts do not allow you to continue file transferring from breakpoint)... Therefore, for most of us, downloading files from online storage space has become a painful thing. As a consequence, JDownloader came into being many years ago.
Free web hosts are too numerous to count now, and many of us are using them to store, share or download a variety of documents/files everyday. But, their shortcomings mainly include the following ones:
Pop up a heap of annoying ads windows
Deceptive download buttons are around
Long waiting time difficult to endure