TreePad's Writer's Outliner is a great utility to organize your writing projects. The bigger the project, the more useful you'll find the program. It helps you organize information, outline writing projects and has hundreds of other potential uses.

It works in the same way Windows Explorer, with a tree structure you can create to store your information. On the left you have your structure, on the right you have your information for each item in the tree. It's ideal for writers wanting to gather facts, bibliographical entries, notes, quotations and even first drafts.