Most of the code looks fairly dull and single-purpose. Except NASA's code, as you may expect. Trick and OpenMCT both look at least interesting, and OpenMCT in particular could be used as the basis for many an interesting web-based project.
I've already seen OpenMCT integrated with Kerbal Space Program. It looks like a great platform for real-time sensor data visualization. I'd love to hook it into a drone and violate some FAA regulations :)
