Here is another online to do application that can help you stay organized. The application is new, simple and has one distinctive feature which separates it from most of the other online to do lists. It provides a multi-column interface where you can group your tasks by adding them to corresponding sections: Personal, Work and School.
Other features such as deleting tasks and saving lists online are also available. The tool is free, but requires user to register first.

Features:
- Create and manage your tasks with grouped to do lists.
- The tasks are grouped under personal, work and school section .
- Add as many tasks as you like and delete them when done.
Check out LifePartition @ http://labs.oventi.net/lifePartition2/index.html