Manage all of your tasks from anywhere with Remember the Milk (free). The app works across all platforms (iPhone, BlackBerry, Android, email, Google Calendar, etc.) and sends email, text, or IM reminders. Remember the Milk also lets you share tasks and lists with any contact (i.e. your hubby) and create Smart Lists that automatically update depending on how you tag your tasks (priority level, due date, category, and so on).