RPITCAIRN  Crashes very time I try to use it. Running this latest version on a Macbook Pro, OS 10.6.2.  
(Version 1.3)

DR. GIRLFRIEND  This latest version is crashtastic.  
(Version 1.3)

BRENT MURRAY  This application does my soul a world of good. So simple, works perfectly, and lets you focus on one task at a time. Thank you for this!  
(Version 1.2)

JORDI VIDAL  It works beautifully on a computer with one screen! and sure for 99% of people's needs.

But there is place for improvement, and I am not alone:

I am writing a piece of research and I use two screens (my laptop and a side monitor).

I would like to have not ONE but TWO applications running, each on it's own screen.

Wouldn't it be cool to have one application on each screen? I'd like to have an application to view other source documents in order to proceed with my research writing.

Sure this scenario applies to other people who have to read and write, not just creative writing.

And surprisingly, there are a lot of people who use TWO monitors, at least in the environments where the company provides a desktop and the user has her/his own laptop.

Looking forward to see this application evolving with the need of the users!

Thanks guys for such a great little app!

Hint: the way to chose the applications is great! Why not have one of this controls on each screen?  
(Version 1.2)

BOGEN  It's free, it certainly seems well implemented, it works as advertised. What more can you want?  
(Version 1.2)

BABYFETT  Not sure what the last poster was talking about because in v1.2 you can certainly use the command + tab feature to switch between applications. I just tried both this app and Isolator and Think wins hands down. With Isolator if I was working in Word and wanted to switch between two documents, I couldn't. I'd have to turn off Isolator and then click on the second document window and then turn Isolator back on. Annoying. But with Think it's flawless and the interface is great and easy to use. Does exactly what it promises and does it great. And I love how you can bring up a guest application (to check mail while writing a Word document) and then just click back on the main application or the background the guest application is hidden away again. Love this. Improving my productivity to no end.   
(Version 1.2)

RAE  Pity this works as an app instead of a "plugin" in the system preference... This means that I have to swift between softwares within this application, in this way, I can't use the ordinary command + tab to change in between applications. So might not be all that good if u r frequently using keyboard to give command.

And iSolator does a much better job.  
(Version 1.2)

ZANGIEF  Now with Leopard, just use Spaces. If you don't have a tidy desktop, use the basic version of Desktopple (most people will be fine without the pro version anyway). It's what I do for my school work, and it works just fine. Pages and Desktopple in one space, music and anything else in the other three.  
(Version 1.2)

MILLCA  The developer link no longer works. Freeverse appears to no longer support Think. Does anyone know where Think went?  
(Version 1.1)

WOODEN BRAIN CONCEPTS  This works great for what it claims it does. I find it hysterical that it's made by Freeverse, the same culprits that make major game distractions that are to blame for untold months (in total) of mucking about. Now then, this would be ideal if it took over CMD-Tab from the system to switch apps, and/or if there were a global hotkey to activate it, and/or you could use the keyboard to switch apps. There seems to be a minor glitch with two monitors: sometimes it dims only one until you switch to it and mess with its controls.  
(Version 1.1)