Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Stickies - Stickies is a PC utility written to replace Post-It-style notes left stuck to your monitor.
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.
Simple Sticky Notes - Sticky notes have long served a great purpose. Hang them around the home or office and be instantly reminded of important items in your personal or professional life... read more.
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
Microsoft Sticky Notes - A brand new Sticky Notes for Windows has arrived!