Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.

Power Planner - Record homework and class schedule.

Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.

MyHomework - myHomework is an app where students can manage their school life.

Basecamp - A simple and elegant project management system.

Helium Student Planner - Helium is an online student planner that lets you organize and color-coordinate your schedule and schoolwork, capture details about every assignment, and plan your study time efficiently.