Great Downloader easy to use can convert into multiple file formats. Fast and impressive
KlickAud - Klickaud is a free web-based application to online download SoundCloud track, music, songs in MP3 formats.
Video DownloadHelper - Browser extension to download videos from the Web
Free M4a to MP3 Converter - Convert AAC to MP3 and M4a to MP3.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Notube Youtube Converter - Notube Youtube Converter is an online video conversion tool that allows you to convert and download YouTube videos into mp3 format.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.