Great Downloader easy to use can convert into multiple file formats. Fast and impressive
MP3Clan - MP3Clan is a popular web-based application that allows you to enjoy and download unlimited audio songs anytime anywhere.
Video DownloadHelper - Browser extension to download videos from the Web
Mp3Bear - Mp3Bear is an Mp3 music search engine that locates the mp3 files all over the net.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
LoudTronix - LoudTronix is the most leading service that helps you to find and download your favorite Mp3 music without any limitation.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.