Luminotes is a terrific Web-based personal wiki that helps you collect and organize information. It's great for project planning, book writing, or as an in-basket for random data you want to hang on to. It doesn't require any special markup skills so Luminotes is a great collaboration tool for people with all levels of computer experience. For solo use or for working offline, there's a desktop version that runs on Linux and Windows.
Licensed under the GNU/GPL, Luminotes has always been free as in speech but now it's also free as in beer. Dan Helfman, the project's creator, says dealing with recently implemented U.S. sales tax laws is too much of headache so he's decided to eliminate monthly subscription fees and charges altogether. The desktop version and online service will continue to be supported "for the foreseeable future."
If you want a notebooking application that's dead-simple to use, yet more robust than a simple note-taking app, have a look at why Luminotes personal wiki might be just the ticket.
Put together to-do lists in a snap. Just open up a new notebook and start typing, then print your list with on click to take it with you. Use the column of buttons on the left side of the screen for functions like text strikethrough and bulleting.

There's also an option to hide everything but the notebook your working on so there's less visual clutter and distraction.

Easily collaborate and share files with others. When you attach pictures to notebooks, you can choose the file size and position the optional thumbnail image.

Export any of your notebooks in HTML or .csv, or easily import existing files from your computer. There's no data lock-in if you decide not to use Luminotes anymore.
