4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.
HDConvert - HDConvert is an online video converter that allows you to convert videos in any format such as MP4, AVI, MOV, and more.
Video DownloadHelper - Browser extension to download videos from the Web
Online video converter - Video conversion tool to convert a video link or file to various formats.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
Vixy.net - This is one of the famous sites from where it is conceivable to download YouTube videos and converting in the desired format.