Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
Reminder Commander - Reminder manager that reminds you about important events in advance.
Notepad Checklist - A checklist made by notepad.pw, easy short and fun to use.
Desktop-Reminder - Desktop-Reminder is a freeware task planner for Windows to manage your tasks and other to-dos’ in really easy way.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Date Reminder - Date Reminder reminds you of recurring or nonrecurring events, like birthdays, bills to pay...