Y2mate is good cloud-based YouTube downloader that supports famous file formats like MP4, M4V, 3GP, WMV, FLV, MO, MP3, WEBM, etc. High speed downloads without registration. I Like the way it downloads the videos directly on the web browser by Inserting "pp" after the word "youtube" in the link to download videos and mp3 files.
FastestTube - Youtube fastesttube downloader will make your internet expirience faster harder beter stronger.โHow to merge video and audio .
4k Video Downloader - 4K Video Downloader is a software program that helps people download video files from sites such as Facebook, YouTube and Dailymotion.
Video DownloadHelper - Browser extension to download videos from the Web
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
FlashGot - FlashGot is a browser extension for Mozilla Firefox that is designed to make it easy to download a whole batch of files in one go. The extension is open source and free to use, but it is no longer compatible with the most recent version of Firefox.
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!