What if you were able to put your entire brain into one computer program? Every thought, work-related or personal, with links to Web pages or files on your computer, and any additional notes you'd care to make. And what if you could then link those thoughts together, weaving them into free and complex associative patterns, much like an actual train of thought going through your head? That's what TheBrain ($249, 30-day free trial) tries to let you do.

The first thing you see when creating a new brain is just a single "thought" against a background called "the Plex." In TheBrain, a thought is just a name for a node in your mind map--much like an "idea" in online mind-mapper MindMeister. Each thought can have multiple siblings, multiple children (sub-thoughts), and even multiple parents. That last one is not an obvious feature, and allows for creating very complex layouts. For example, in a film-related mind map, you could have actor Keanu Reeves both under "male heroes" and under "Matrix cast."

The Plex itself hasn't changed much since I first used TheBrain (when it was still called PersonalBrain), about five years ago. It is still visually impressive and fun to use. As you click a thought you'd like to focus on, it smoothly floats over to the center of the Plex, and the other thoughts get rearranged (or shown or hide), all with slick, futuristic animations.

One major visual change for TheBrain 7 is that links between thoughts are now curved, rather than simple straight lines. That sounds minor, but when you're working on a huge mind map, it does make a visual impact.

Speaking of links, TheBrain's links pack quite a bit of functionality in themselves. Links can have directionality (e.g, "Films" leads to "Matrix"), and they can even have text. This is very useful for making links into specific verbs, so the link from Keanu Reeves to The Matrix could say "acted in," whereas the link from Mr. Reeves to Henry's Crime could say "acted and produced." You can also style links with colors and line thicknesses, and create "link types" so you don't have to define the same link properties over and over again.

TheBrain is Java-based, which, to me, is a bit of a drawback. Like other large Java applications (JDownloader and jEdit come to mind) it feels a bit heavy sometimes. For example, the center of the Plex rotates, but this particular animation stuttered throughout my use of the application, even when TheBrain was idle (other animations were smooth). TheBrain took up around 220MB of RAM on my system, or about one third of what Chrome takes with eleven open tabs on the same system. Not a tiny footprint, but reasonable for such a large application.

TheBrain also offers an online synchronization service called WebBrain, which lets you seamlessly sync a local Brain with its online version, and thus, synchronize Brains you're using on more than one system (such as your desktop and a laptop).

It is definitely an application that takes some getting used to, but for visual thinkers, TheBrain can make a big difference in productivity and organization.

--Erez Zukerman