Ta-Da List optimized for iPhone (tuaw.com)
It's fantastic. The pages have been built to fit so well on the iPhone's screen that you forget you're on the web - it feels like a stand alone application on the iPhone. If you're a GTD freak (and even if you're not), you ought to check this out. I tip my hat to 37signals. Ta-Da List for iPhone is great.
Ta-Da list now on iPhone (doiphone.com)
One of my favourite applications - ta-da list - which is basically an organizational to-do list application from 37signals is now available on the iPhone. This is brilliant because it makes your to-do list much more powerful when you can wander around with it!
If you have an iPhone, just visit tadalist.com and you’ll see the iPhone version. You can access the standard web version with your desktop web browser. Both versions share data and lists.