Homeschool Planet is an online homeschool planner and much more. It directly integrates with more and more curriculum every day. The idea is for you to be able to schedule and monitor as much of your students' educational experience as possible. As an example, you can purchase integrated lesson plans for wordbuildonline ($4.95!) that will combine with any other applications you are using to create a complete daily schedule for each of your students for the whole year. It recognizes the realities of life, and makes rescheduling easy. Some applications were developed exclusively for use within Homeschool Planet, like our own Words That Matter
, a series of 12 week courses that approach multiple meaning words every student should know.