During the 1990s, I had built a large enough network of people that I could contract myself out for short-term programming jobs. One of the jobs was a six-month contract to help finish a call center for an electric company in Pineville, Louisiana. The application we developed for the customer service representatives (CSPs) was written using the PowerBuilder programming language. The interactive voice response (IVR) program was a commercial application that ran on an IBM AS400. And some single-purpose apps were a mix of commercial software and custom software written in C++.