Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
ByClick Downloader - ByClick Downloader (Former YouTube By Click) is a video downloader software for Windows. (Former YouTube By Click) Supported sites: YouTube, Dailymotion, Vimeo, Facebook, Instagram, Twitter, Pinterest and +40 site
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
deturl.com - How to download YouTube videos for fair rights use. No software required. Support for DailyMotion, Vimeo, and FaceBook. Save as MP3 music.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
Freemake Video Downloader - Freemake Video Downloader downloads videos from more than 10,000 sites. Absolutely FREE. Download YouTube in HD, MP4, MP3. **Voted best of 2018**.