From 4Media Software Studio:
4Media Download YouTube Video for Mac is a very easy-to-use free YouTube video download tool. It has the completed functions to download YouTube video to your Mac and allows you to batch download multiple YouTube video files at a time. With the stand-alone YouTube video browser, you can easily browse, directly download and quickly search online YouTube video. Right-click menu integration lets you download YouTube video with only one right click of your mouse.
What's new in this version:
Optimized operational performace