Best Youtube Video Downloader / Helper

Best Online Youtube Video Downloader List - My Favorite 

This is the most easy way to download youtube without software! Yeah, Online Version! Without install anything.

1. Youtube Video Downloader from Vixy.net - This service allows you convert a Flash Video / FLV file (YouTube's videos,etc) to MPEG4 (AVI/MOV/MP4/MP3/3GP) file online. It is using a compressed domain transcoder technology (outline in Japanese). It converts FLV to MPEG4 faster and less lossy than a typical transcoder.
2. Youtube Video Downloader from VideoDL.org - VideoDL is a quick AJAX application which allows you to download online video into your computer. It supports top 3 video sites - YouTube, Google Video, and Break.com. Simply copy the link of the page with video and paste it into the textbox. Click "Get It!" and follow the instruction. After you have saved the files into your harddrive, make sure the extension of the file is .flv for Flash Player to recongize. Download FLV Player or VLC Player to open the flash video file. To decode FLV files from downloaded Google Video, YouTube, use video converter such as Riva FLV Encoder or Total Video Converter.
3. Youtube Video Downloader from vConversion.com - This service allows you convert an Online YouTube Video to more popular formats like mpg, wmv, mov, mp4, mp3, 3gp, dvd...etc.vconversion.com converts FLV video to the selected format faster and less lossy than a typical transcoder.
4. Youtube Video Downloader from KeepVid.com - Download and save videos directly from Youtube, Google, Metacafe, Putfile and more. Simply copy and paste.