Kickoff for Mac and iPhone aims to streamline getting things done and communicating with workgroups. That means sharing task lists, splitting up who is doing what, and chatting about it in real time. Whether you run a small to medium-sized business or have colleagues in remote geographical locations, Kickoff has something to offer.
Projectbook for iPad is a note taker and to-do app that aims to streamline how you organize your data. Instead of using a note taking app and a to-do app separately, Projectbook allows you to keep them all in one place, minimizing the need for multiple apps to stay on task. You also have the ability to take handwritten notes or even draw which makes Projectbook ideal for almost any class or presentation setting.
I've joked that to-do apps are like gym memberships -- something people throw money at out of guilt and good intentions, but seldom follow through on using. Finish by Basil, just released for the iPhone, aims to to help with that through a combination of good design and the understanding that failure often is an option. In fact, Finish is crafted precisely with procrastinators in mind.