The website is still a little rough around the edges, but the product is ready for initial release, so here goes! Let me introduce you to the osPID:

We’ve been working hard over the last several months to build a fully-featured, open source PID controller that’s every bit as capable as its closed brethren.
There’s a bunch of information on this site regarding technical details, purchasing information, and even a quick PID primer. Take a look around, and let us know what you think!
(If you’re so inclined, there’s also a post on my personal blog with some introductory videos)