aTube Catcher - aTube Catcher also can burn in DVD/VCD your videos without use any other third party software.
YoutubeMultiDownloader - Just like its name YouTube Multi Downloader, it is an online website for downloading the videos of downloading without using any video download and accelerator.
JDownloader - JDownloader is a free downloading tool that enables you to download files from over a hundred hosting sites. The tool is compatible with Linux, Mac and Windows operating systems. Read more about JDownloader.
KeepVid - A free web application that allows you to download videos
streamWriter - streamWriter records music broadcasted by internet-radiostations. Features:
ShareTube - Watch YouTube, synced with friends.