Great Downloader easy to use can convert into multiple file formats. Fast and impressive
YouTube2Converter - Convert Videos on YouTube to MP4 and Download videos in the best quality.
Video DownloadHelper - Browser extension to download videos from the Web
YTBTO - Ytbto is the best free and fast youtube to mp3 mp4 converter that allows users to convert and download youtube videos in many different formats with the best video quality.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
YouTube2Video - Youtube to video downloader and Converter, Convert & download YouTube videos to MP3 MP4 and also convert device videos to mp3. No software download needed.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.