MSD Organizer is another great personal and professional organizer or portable personal information manager. It offers many interesting features including pluggable modules such as a calendar with reminder function, phone book, todo list, internet password manager and much more.
EssentialPIM (Portable Personal Information Manager) is an appointment and information manager. It can be used as a scheduler, contact manager and outliner to keep track of to do lists and daily calendar events.
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.