CalPrint - CalPrint uses your existing reminders and calendar entries on your iPad or iPhone (Exchange, iCal and Google Calendars etc.
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
Air Sharing - Air Sharing lets you bring your documents with you — without bringing your computer.
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
Print - Developers of application solutions for the iPad & iPhone. 'Printing on the iPhone: “There's an App for that” - Print & Share' as featured in Apple's “Office” iPhone commercial
Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.