Blue Light is Auroville's de-facto IT department. Installing and maintaining software for automating the offices in Auroville is their job. For doing so, they focus on open source software. Open source, being a community driven software development paradigm, fits just right in Auroville. Besides providing software support, they engage in design and implementation electronic systems once in a while.
I volunteered in Blue Light for a week, right after arriving at Auroville. We worked on automating a water pumping system. By the end of the week, we had the devices assembled and working. It doesn't take long when people want to get something done. Doing the same thing in a corporate or academic setting would have taken a lot of time and effort.