Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
Bizdownloader - Bizdownloader is Video Downloader website from top social networking websites like Youtube...
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Shutter Encoder - Open source software without any restriction - converter all formats video|audio|image professionnals codecs and standards - swiss knife tool Windows, OSX and Linux
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
HandBrake - HandBrake allows users to easily convert video files into a wide variety of different formats.