What are some alternatives?
4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.
SaveFrom.net - Free Online service to Download YouTube videos at one click! The best YouTube Downloader supporting fast and easy vimeo, Facebook and Dailymotion video Download and much more!
Youtube-DLG - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
Video DownloadHelper - DownloadHelper is a tool for web content extraction.
Freemake Video Downloader - Freemake Video Downloader downloads videos from YouTube & 10,000 more sites. Absolutely FREE. Download YouTube in HD, MP4, MP3. **Voted best of 2018**.