Minitube - Minitube is a YouTube desktop application.
Leawo Music Recorder - Leawo Music Recorder is a superb but easy-to-use music recording software program that lets you record free music from any built-in input audio, computer audio and online music sources, like YouTube, Spotify, AOL Music, Last.fm, etc.
YouView - Browse, watch, convert, and download YouTube videos on your Mac faster, because YouView uses the core technologies of Mac OS X to play instead of Flash allowing video to run smoother on systems with lower specs.
Audio Record Wizard - How to record streaming audio with the streaming audio recorder - Audio Record Wizard.
Tubbler - YouTube Movie Player for Mac OS X.
SoundTap - Download SoundTap Streaming Audio Recording Software Free to record live audio, streaming music, internet radio easily in perfect pure digital on PC and Mac.