Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
OnlineNotepad.org - Free browser-based text editor
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
aNotepad - anotepad.com is an online text editor that you can write notes and anotepad also has great stability
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.