For example, 'youtube-dl' is a command-line program that can download videos from YouTube and other sites. In addition to apps, there are also scripts available for downloading YouTube videos. Whatever the reason, there are a variety of apps and scripts available to help you download YouTube videos. Maybe they want to watch the videos offline, without an internet connection, or maybe they want to save the videos for future reference. There are many reasons why someone might want to download YouTube videos.