FreeYouTubeDownloader.Online - The fastest and easiest way to download YouTube videos or download music from YouTube as MP3 files.
Softorino YouTube Converter - Download YouTube video & audio. Watch and listen offline
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Yout - YouTube to Mp3 Converter
iEasyRecorder - iEasyRecorder is a powerful Mac audio recording program which allows you to record audio, sounds and music from any applications.
You-Get - Command-line utility to download media contents from the web