I mentioned Things, the new Mac GTD application in a previous post.
I have just read a pretty good review of the Alpha release of Things over at LifeHacker.com
I have briefly toyed with Things, but I am spending a lot of my GTD research time right now still with OmniFocus, which I must admit I am loving and the daily updates are bringing new features to the party all the time.
It is a fantastic time to be a Mac owner, and into Getting Things Done. I cannot wait to fully review all these new GTD applications.