I’ve been using NetNewsWire for years. It is hands down my favorite RSS reader. It is simple, fast and automatically synchronizes to Newsgator so I can check my RSS feeds when I’m away from my computer. It simplifies my life and practically eliminates the need for me to subscribe to magazines. And the software just keeps getting better. I recommend it highly to Mac users.
From Within 
I’m currently testing Netnewswire and am also interesting in synching with newsgator. How’s the synching overall ? Any problems with it ?
I have been using NetNewsWire for a long time and the synching with Newsgator has been almost perfect. Occasionally, the NG server is down but that resolves within minutes. NG is a great product!