This app is, as its name indicates, a download manager designed to help you fetch video clips from the Web. By working with this program you can download YouTube music videos, short documentaries from the Vimeo website, TED Talks recordings, and many other.
The program comes with a built-in browser which enables you to surf various video sharing webpages, like YouTube, Vimeo or Hulu, and find the clips you wish to download to your Mac. The output settings are very simple to configure and you can preview the videos while they're being downloaded.
Another good aspect about this download manager is that it also comes with media conversion capabilities. Hence, you can convert the downloaded video clips to formats compatible with dozens of multimedia devices (like Android phones, iPad or Apple TV) or extract the audio content from the files for later.
In my testing, the application occasionally ran slowly. This issue mostly happened when I used the integrated video converter.
If you ask me, this app is a bit expensive. Nevertheless, it supports downloading clips from various video sharing websites, lets you save the fetched files to various media formats, and provides you with quality results. So, it's up to you to decide if it's worth spending all those money on a program that offers you the aforementioned features.