Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
SABnzbd - SABnzbd is a free/open-source cross-platform binary newsreader written in Python.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
NZBGet - The most efficient usenet downloader.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
GrabIt - GrabIt is a free application that enables you to easily find and download content from Usenet news...