VITO Technology has updated Task2Gather
(http://task2gather.com/site/iphone.html), an online task manager.
It’s been revved for iPhone OS 3.0 and now supports Push
Notifications.

With the free desktop client available, all functions get
synchronized on the web and on the iPhone. The new version also has a
new look&feel to it that always help. Task2Gather keeps all tasks in
the “web cloud”; data is accessible anytime from iPhone, Mac or PC.

The app has an hierarchic structure: every task can be divided into
several sub-tasks, and these sub-tasks can be divided further without
limit. Since the tasks created in Task2Gather are stored online, they
can be shared. After sharing tasks users can assign the “new-comers”
responsible for task completion.

Task2Gather is available for US$2.99 at the Apple App Store.