LiveNow is a fantastic Twitch client for Mac OS X. It allows you check your following channels and watch streams without even opening the browser.
WHAT USERS SAY
“I’ve wanted an app like this for a while! This will now be my go-to app for Twitch.”
“If you are a frequent Twitch.tv user you will find this to be a super convenient way to pull up the streams you want to watch. ”
• Check which of your favorite channels are currently live.
• Get notified when your following channel goes online.
• Watch streams in HTML5 or HLS through a Mini Player, VLC, or Safari.
• Use a lot less energy than flash player.
• Menu bar app for quick access.
Mac App Store: https://itunes.apple.com/us/app/livenow/id948520249?mt=12