A simple, designy, to do web app. Looks good if you need a simple way to track daily tasks - check the video demo

"It can be annoying to get an alert about a new version when you are working. A new version is not a “drop everything and deal with this now” type of alert." This is my only bugbear on the Mac, mainly because I run a lot of regularly updated freeware

I never did finish reading the Getting Things Done book, taking what it outlined and using the parts I felt comfortable with. It's remarkable similar to what is proposed here. Good, short, read if you you want an insight into GTD without all the hassle.