Currently my (personal) time is entirely spent on Python and the django web framework, but in the past I've done everything from Microsoft ASP and .NET to php. Others too, but those are the core of my practice.
My (professional) time is spent on a mix of django and Crestron primarily. I'm a much bigger fan of SIMPL+ than SIMPL in the Crestron world. I use whichever is appropriate for the job, but if a modular piece is going to take more than 10 symbols to accomplish in SIMPL, I'm probably going to do it in SIMPL+ instead.
Some of my projects include: