If you're just looking for an advanced logic analyzer, http://www.saleae.com/logic/ http://www.saleae.com/logic/ is relatively cheap and pretty awesome. Linux

If you're just looking for an advanced logic analyzer, http://www.saleae.com/logic/ http://www.saleae.com/logic/ is relatively cheap and pretty awesome. Linux and Mac OS X versions of the software coming soon I believe. It also includes an SDK so it's awesome for programmers. It's about the size of the new iPod Nano and comes with a carrying case to store the modular leads, and USB cable. EDIT: Before people flame, yes this product is pretty different from the OP's link, however it might be somewhat what s/he's looking for.