Task Coach Portable is a Free, open source Portable Task Manager. It is stand-alone and can be stored and run directly from a USB drive. Use it to create, organize, manage and store your to do list or daily tasks while on the move.
EssentialPIM is a portable personal information manager (PIM) designed to help you organize appointments, contacts, tasks, notes, and daily schedules in one place. It functions as a scheduler, contact manager, and to do list organizer, making it an excellent all in one productivity tool you can carry on a USB flash drive.
Total Organizer allows a user to Organize and store personal information such as a contacts, notes, tasks and to-do items within an easy to navigate folder tree structure and calendar menu. Typically a user would install Total Organizer to a folder on their hard disk. But we are going to show you how to install Total Organizer to a folder on your USB flash drive, enabling you to bring your Organizer with you to use wherever you go.